Ability to determine the specific location of a sound source.
A type of non-ionizing radiation in which energy is transmitted through solid, liquid, or gas as compression waves. Sound (acoustic or sonic) radiation with frequencies above the audible range is classified as ultrasonic. Sound radiation below the audible range is classified as infrasonic.
NEURAL PATHWAYS and connections within the CENTRAL NERVOUS SYSTEM, beginning at the hair cells of the ORGAN OF CORTI, continuing along the eighth cranial nerve, and terminating at the AUDITORY CORTEX.
Use of sound to elicit a response in the nervous system.
An order of BIRDS with the common name owls characterized by strongly hooked beaks, sharp talons, large heads, forward facing eyes, and facial disks. While considered nocturnal RAPTORS, some owls do hunt by day.
The process whereby auditory stimuli are selected, organized, and interpreted by the organism.
The hearing and equilibrium system of the body. It consists of three parts: the EXTERNAL EAR, the MIDDLE EAR, and the INNER EAR. Sound waves are transmitted through this organ where vibration is transduced to nerve signals that pass through the ACOUSTIC NERVE to the CENTRAL NERVOUS SYSTEM. The inner ear also contains the vestibular organ that maintains equilibrium by transducing signals to the VESTIBULAR NERVE.
The posterior pair of the quadrigeminal bodies which contain centers for auditory function.
Hearing loss due to disease of the AUDITORY PATHWAYS (in the CENTRAL NERVOUS SYSTEM) which originate in the COCHLEAR NUCLEI of the PONS and then ascend bilaterally to the MIDBRAIN, the THALAMUS, and then the AUDITORY CORTEX in the TEMPORAL LOBE. Bilateral lesions of the auditory pathways are usually required to cause central hearing loss. Cortical deafness refers to loss of hearing due to bilateral auditory cortex lesions. Unilateral BRAIN STEM lesions involving the cochlear nuclei may result in unilateral hearing loss.
The ability or act of sensing and transducing ACOUSTIC STIMULATION to the CENTRAL NERVOUS SYSTEM. It is also called audition.
The science pertaining to the interrelationship of psychologic phenomena and the individual's response to the physical properties of sound.
The audibility limit of discriminating sound intensity and pitch.
A part of the MEDULLA OBLONGATA situated in the olivary body. It is involved with motor control and is a major source of sensory input to the CEREBELLUM.
Signals for an action; that specific portion of a perceptual field or pattern of stimuli to which a subject has learned to respond.
The region of the cerebral cortex that receives the auditory radiation from the MEDIAL GENICULATE BODY.
The graphic registration of the frequency and intensity of sounds, such as speech, infant crying, and animal vocalizations.
The sounds heard over the cardiac region produced by the functioning of the heart. There are four distinct sounds: the first occurs at the beginning of SYSTOLE and is heard as a "lubb" sound; the second is produced by the closing of the AORTIC VALVE and PULMONARY VALVE and is heard as a "dupp" sound; the third is produced by vibrations of the ventricular walls when suddenly distended by the rush of blood from the HEART ATRIA; and the fourth is produced by atrial contraction and ventricular filling.
Any sound which is unwanted or interferes with HEARING other sounds.
The cochlear part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). The cochlear nerve fibers originate from neurons of the SPIRAL GANGLION and project peripherally to cochlear hair cells and centrally to the cochlear nuclei (COCHLEAR NUCLEUS) of the BRAIN STEM. They mediate the sense of hearing.
The brain stem nucleus that receives the central input from the cochlear nerve. The cochlear nucleus is located lateral and dorsolateral to the inferior cerebellar peduncles and is functionally divided into dorsal and ventral parts. It is tonotopically organized, performs the first stage of central auditory processing, and projects (directly or indirectly) to higher auditory areas including the superior olivary nuclei, the medial geniculi, the inferior colliculi, and the auditory cortex.
Behavioral manifestations of cerebral dominance in which there is preferential use and superior functioning of either the left or the right side, as in the preferred use of the right hand or right foot.
The branch of physics that deals with sound and sound waves. In medicine it is often applied in procedures in speech and hearing studies. With regard to the environment, it refers to the characteristics of a room, auditorium, theatre, building, etc. that determines the audibility or fidelity of sounds in it. (From Random House Unabridged Dictionary, 2d ed)
Warm-blooded VERTEBRATES possessing FEATHERS and belonging to the class Aves.
The outer part of the hearing system of the body. It includes the shell-like EAR AURICLE which collects sound, and the EXTERNAL EAR CANAL, the TYMPANIC MEMBRANE, and the EXTERNAL EAR CARTILAGES.
The upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs.
Electronic devices that increase the magnitude of a signal's power level or current.
A subfamily of the Muridae consisting of several genera including Gerbillus, Rhombomys, Tatera, Meriones, and Psammomys.
Personal devices for protection of the ears from loud or high intensity noise, water, or cold. These include earmuffs and earplugs.
Partial hearing loss in both ears.
Part of an ear examination that measures the ability of sound to reach the brain.
The part of the brain that connects the CEREBRAL HEMISPHERES with the SPINAL CORD. It consists of the MESENCEPHALON; PONS; and MEDULLA OBLONGATA.
The family Gryllidae consists of the common house cricket, Acheta domesticus, which is used in neurological and physiological studies. Other genera include Gryllotalpa (mole cricket); Gryllus (field cricket); and Oecanthus (tree cricket).
An auditory orientation mechanism involving the emission of high frequency sounds which are reflected back to the emitter (animal).
Voluntary or involuntary motion of head that may be relative to or independent of body; includes animals and humans.
The electric response evoked in the CEREBRAL CORTEX by ACOUSTIC STIMULATION or stimulation of the AUDITORY PATHWAYS.
Member of the genus Trichechus inhabiting the coast and coastal rivers of the southeastern United States as well as the West Indies and the adjacent mainland from Vera Cruz, Mexico to northern South America. (From Scott, Concise Encyclopedia Biology, 1996)
The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.
Electronic hearing devices typically used for patients with normal outer and middle ear function, but defective inner ear function. In the COCHLEA, the hair cells (HAIR CELLS, VESTIBULAR) may be absent or damaged but there are residual nerve fibers. The device electrically stimulates the COCHLEAR NERVE to create sound sensation.
The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801)
The awareness of the spatial properties of objects; includes physical space.
The ability to estimate periods of time lapsed or duration of time.
Short, predominantly basic amino acid sequences identified as nuclear import signals for some proteins. These sequences are believed to interact with specific receptors at the NUCLEAR PORE.
Electrical waves in the CEREBRAL CORTEX generated by BRAIN STEM structures in response to auditory click stimuli. These are found to be abnormal in many patients with CEREBELLOPONTINE ANGLE lesions, MULTIPLE SCLEROSIS, or other DEMYELINATING DISEASES.
The time from the onset of a stimulus until a response is observed.
A dimension of auditory sensation varying with cycles per second of the sound stimulus.
Order of mammals whose members are adapted for flight. It includes bats, flying foxes, and fruit bats.
Physical forces and actions in living things.
The anterior pair of the quadrigeminal bodies which coordinate the general behavioral orienting responses to visual stimuli, such as whole-body turning, and reaching.
Awareness of oneself in relation to time, place and person.
The process in which light signals are transformed by the PHOTORECEPTOR CELLS into electrical signals which can then be transmitted to the brain.
Surgical insertion of an electronic hearing device (COCHLEAR IMPLANTS) with electrodes to the COCHLEAR NERVE in the inner ear to create sound sensation in patients with residual nerve fibers.
The absence or restriction of the usual external sensory stimuli to which the individual responds.
Theoretical representations that simulate the behavior or activity of the neurological system, processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.
The function of opposing or restraining the excitation of neurons or their target excitable cells.
Abrupt changes in the membrane potential that sweep along the CELL MEMBRANE of excitable cells in response to excitation stimuli.
Elements of limited time intervals, contributing to particular results or situations.
Wearable sound-amplifying devices that are intended to compensate for impaired hearing. These generic devices include air-conduction hearing aids and bone-conduction hearing aids. (UMDNS, 1999)
The part of the inner ear (LABYRINTH) that is concerned with hearing. It forms the anterior part of the labyrinth, as a snail-like structure that is situated almost horizontally anterior to the VESTIBULAR LABYRINTH.
Semidomesticated variety of European polecat much used for hunting RODENTS and/or RABBITS and as a laboratory animal. It is in the subfamily Mustelinae, family MUSTELIDAE.
Voluntary or reflex-controlled movements of the eye.
The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.
Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures.
Within a eukaryotic cell, a membrane-limited body which contains chromosomes and one or more nucleoli (CELL NUCLEOLUS). The nuclear membrane consists of a double unit-type membrane which is perforated by a number of pores; the outermost membrane is continuous with the ENDOPLASMIC RETICULUM. A cell may contain more than one nucleus. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)
The coordination of a sensory or ideational (cognitive) process and a motor activity.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
The capacity of the NERVOUS SYSTEM to change its reactivity as the result of successive activations.
The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.
The process of moving proteins from one cellular compartment (including extracellular) to another by various sorting and transport mechanisms such as gated transport, protein translocation, and vesicular transport.
The observable response an animal makes to any situation.
Surgically placed electric conductors through which ELECTRIC STIMULATION is delivered to or electrical activity is recorded from a specific point inside the body.
Components of a cell produced by various separation techniques which, though they disrupt the delicate anatomy of a cell, preserve the structure and physiology of its functioning constituents for biochemical and ultrastructural analysis. (From Alberts et al., Molecular Biology of the Cell, 2d ed, p163)
The part of a cell that contains the CYTOSOL and small structures excluding the CELL NUCLEUS; MITOCHONDRIA; and large VACUOLES. (Glick, Glossary of Biochemistry and Molecular Biology, 1990)
Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.
An abrupt voluntary shift in ocular fixation from one point to another, as occurs in reading.
Use of electric potential or currents to elicit biological responses.
Specialized junctions at which a neuron communicates with a target cell. At classical synapses, a neuron's presynaptic terminal releases a chemical transmitter stored in synaptic vesicles which diffuses across a narrow synaptic cleft and activates receptors on the postsynaptic membrane of the target cell. The target may be a dendrite, cell body, or axon of another neuron, or a specialized region of a muscle or secretory cell. Neurons may also communicate via direct electrical coupling with ELECTRICAL SYNAPSES. Several other non-synaptic chemical or electric signal transmitting processes occur via extracellular mediated interactions.
The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.
Refers to animals in the period of time just after birth.
Noises, normal and abnormal, heard on auscultation over any part of the RESPIRATORY TRACT.
Depolarization of membrane potentials at the SYNAPTIC MEMBRANES of target neurons during neurotransmission. Excitatory postsynaptic potentials can singly or in summation reach the trigger threshold for ACTION POTENTIALS.
Act of listening for sounds within the heart.
Abnormally low BODY TEMPERATURE that is intentionally induced in warm-blooded animals by artificial means. In humans, mild or moderate hypothermia has been used to reduce tissue damages, particularly after cardiac or spinal cord injuries and during subsequent surgeries.
The positioning and accommodation of eyes that allows the image to be brought into place on the FOVEA CENTRALIS of each eye.
A non-essential amino acid. It is found primarily in gelatin and silk fibroin and used therapeutically as a nutrient. It is also a fast inhibitory neurotransmitter.
Recombinant proteins produced by the GENETIC TRANSLATION of fused genes formed by the combination of NUCLEIC ACID REGULATORY SEQUENCES of one or more genes with the protein coding sequences of one or more genes.
Histochemical localization of immunoreactive substances using labeled antibodies as reagents.

Midbrain combinatorial code for temporal and spectral information in concurrent acoustic signals. (1/773)

All vocal species, including humans, often encounter simultaneous (concurrent) vocal signals from conspecifics. To segregate concurrent signals, the auditory system must extract information regarding the individual signals from their summed waveforms. During the breeding season, nesting male midshipman fish (Porichthys notatus) congregate in localized regions of the intertidal zone and produce long-duration (>1 min), multi-harmonic signals ("hums") during courtship of females. The hums of neighboring males often overlap, resulting in acoustic beats with amplitude and phase modulations at the difference frequencies (dFs) between their fundamental frequencies (F0s) and harmonic components. Behavioral studies also show that midshipman can localize a single hum-like tone when presented with a choice between two concurrent tones that originate from separate speakers. A previous study of the neural mechanisms underlying the segregation of concurrent signals demonstrated that midbrain neurons temporally encode a beat's dF through spike synchronization; however, spectral information about at least one of the beat's components is also required for signal segregation. Here we examine the encoding of spectral differences in beat signals by midbrain neurons. The results show that, although the spike rate responses of many neurons are sensitive to the spectral composition of a beat, virtually all midbrain units can encode information about differences in the spectral composition of beat stimuli via their interspike intervals (ISIs) with an equal distribution of ISI spectral sensitivity across the behaviorally relevant dFs. Together, temporal encoding in the midbrain of dF information through spike synchronization and of spectral information through ISI could permit the segregation of concurrent vocal signals.  (+info)

Desynchronizing responses to correlated noise: A mechanism for binaural masking level differences at the inferior colliculus. (2/773)

We examined the adequacy of decorrelation of the responses to dichotic noise as an explanation for the binaural masking level difference (BMLD). The responses of 48 low-frequency neurons in the inferior colliculus of anesthetized guinea pigs were recorded to binaurally presented noise with various degrees of interaural correlation and to interaurally correlated noise in the presence of 500-Hz tones in either zero or pi interaural phase. In response to fully correlated noise, neurons' responses were modulated with interaural delay, showing quasiperiodic noise delay functions (NDFs) with a central peak and side peaks, separated by intervals roughly equivalent to the period of the neuron's best frequency. For noise with zero interaural correlation (independent noises presented to each ear), neurons were insensitive to the interaural delay. Their NDFs were unmodulated, with the majority showing a level of activity approximately equal to the mean of the peaks and troughs of the NDF obtained with fully correlated noise. Partial decorrelation of the noise resulted in NDFs that were, in general, intermediate between the fully correlated and fully decorrelated noise. Presenting 500-Hz tones simultaneously with fully correlated noise also had the effect of demodulating the NDFs. In the case of tones with zero interaural phase, this demodulation appeared to be a saturation process, raising the discharge at all noise delays to that at the largest peak in the NDF. In the majority of neurons, presenting the tones in pi phase had a similar effect on the NDFs to decorrelating the noise; the response was demodulated toward the mean of the peaks and troughs of the NDF. Thus the effect of added tones on the responses of delay-sensitive inferior colliculus neurons to noise could be accounted for by a desynchronizing effect. This result is entirely consistent with cross-correlation models of the BMLD. However, in some neurons, the effects of an added tone on the NDF appeared more extreme than the effect of decorrelating the noise, suggesting the possibility of additional inhibitory influences.  (+info)

Early visual experience shapes the representation of auditory space in the forebrain gaze fields of the barn owl. (3/773)

Auditory spatial information is processed in parallel forebrain and midbrain pathways. Sensory experience early in life has been shown to exert a powerful influence on the representation of auditory space in the midbrain space-processing pathway. The goal of this study was to determine whether early experience also shapes the representation of auditory space in the forebrain. Owls were raised wearing prismatic spectacles that shifted the visual field in the horizontal plane. This manipulation altered the relationship between interaural time differences (ITDs), the principal cue used for azimuthal localization, and locations of auditory stimuli in the visual field. Extracellular recordings were used to characterize ITD tuning in the auditory archistriatum (AAr), a subdivision of the forebrain gaze fields, in normal and prism-reared owls. Prism rearing altered the representation of ITD in the AAr. In prism-reared owls, unit tuning for ITD was shifted in the adaptive direction, according to the direction of the optical displacement imposed by the spectacles. Changes in ITD tuning involved the acquisition of unit responses to adaptive ITD values and, to a lesser extent, the elimination of responses to nonadaptive (previously normal) ITD values. Shifts in ITD tuning in the AAr were similar to shifts in ITD tuning observed in the optic tectum of the same owls. This experience-based adjustment of binaural tuning in the AAr helps to maintain mutual registry between the forebrain and midbrain representations of auditory space and may help to ensure consistent behavioral responses to auditory stimuli.  (+info)

Auditory perception: does practice make perfect? (4/773)

Recent studies have shown that adult humans can learn to localize sounds relatively accurately when provided with altered localization cues. These experiments provide further evidence for experience-dependent plasticity in the mature brain.  (+info)

Single cortical neurons serve both echolocation and passive sound localization. (5/773)

The pallid bat uses passive listening at low frequencies to detect and locate terrestrial prey and reserves its high-frequency echolocation for general orientation. While hunting, this bat must attend to both streams of information. These streams are processed through two parallel, functionally specialized pathways that are segregated at the level of the inferior colliculus. This report describes functionally bimodal neurons in auditory cortex that receive converging input from these two pathways. Each brain stem pathway imposes its own suite of response properties on these cortical neurons. Consequently, the neurons are bimodally tuned to low and high frequencies, and respond selectively to both noise transients used in prey detection, and downward frequency modulation (FM) sweeps used in echolocation. A novel finding is that the monaural and binaural response properties of these neurons can change as a function of the sound presented. The majority of neurons appeared binaurally inhibited when presented with noise but monaural or binaurally facilitated when presented with the echolocation pulse. Consequently, their spatial sensitivity will change, depending on whether the bat is engaged in echolocation or passive listening. These results demonstrate that the response properties of single cortical neurons can change with behavioral context and suggest that they are capable of supporting more than one behavior.  (+info)

Functional selection of adaptive auditory space map by GABAA-mediated inhibition. (6/773)

The external nucleus of the inferior colliculus in the barn owl contains an auditory map of space that is based on the tuning of neurons for interaural differences in the timing of sound. In juvenile owls, this region of the brain can acquire alternative maps of interaural time difference as a result of abnormal experience. It has been found that, in an external nucleus that is expressing a learned, abnormal map, the circuitry underlying the normal map still exists but is functionally inactivated by inhibition mediated by gamma-aminobutyric acid type A (GABAA) receptors. This inactivation results from disproportionately strong inhibition of specific input channels to the network. Thus, experience-driven changes in patterns of inhibition, as well as adjustments in patterns of excitation, can contribute critically to adaptive plasticity in the central nervous system.  (+info)

Sensitivity to simulated directional sound motion in the rat primary auditory cortex. (7/773)

Sensitivity to simulated directional sound motion in the rat primary auditory cortex. This paper examines neuron responses in rat primary auditory cortex (AI) during sound stimulation of the two ears designed to simulate sound motion in the horizontal plane. The simulated sound motion was synthesized from mathematical equations that generated dynamic changes in interaural phase, intensity, and Doppler shifts at the two ears. The simulated sounds were based on moving sources in the right frontal horizontal quadrant. Stimuli consisted of three circumferential segments between 0 and 30 degrees, 30 and 60 degrees, and 60 and 90 degrees and four radial segments at 0, 30, 60, and 90 degrees. The constant velocity portion of each segment was 0.84 m long. The circumferential segments and center of the radial segments were calculated to simulate a distance of 2 m from the head. Each segment had two trajectories that simulated motion in both directions, and each trajectory was presented at two velocities. Young adult rats were anesthetized, the left primary auditory cortex was exposed, and microelectrode recordings were obtained from sound responsive cells in AI. All testing took place at a tonal frequency that most closely approximated the best frequency of the unit at a level 20 dB above the tuning curve threshold. The results were presented on polar plots that emphasized the two directions of simulated motion for each segment rather than the location of sound in space. The trajectory exhibiting a "maximum motion response" could be identified from these plots. "Neuron discharge profiles" within these trajectories were used to demonstrate neuron activity for the two motion directions. Cells were identified that clearly responded to simulated uni- or multidirectional sound motion (39%), that were sensitive to sound location only (19%), or that were sound driven but insensitive to our location or sound motion stimuli (42%). The results demonstrated the capacity of neurons in rat auditory cortex to selectively process dynamic stimulus conditions representing simulated motion on the horizontal plane. Our data further show that some cells were responsive to location along the horizontal plane but not sensitive to motion. Cells sensitive to motion, however, also responded best to the moving sound at a particular location within the trajectory. It would seem that the mechanisms underlying sensitivity to sound location as well as direction of motion converge on the same cell.  (+info)

Influence of head position on the spatial representation of acoustic targets. (8/773)

Sound localization in humans relies on binaural differences (azimuth cues) and monaural spectral shape information (elevation cues) and is therefore the result of a neural computational process. Despite the fact that these acoustic cues are referenced with respect to the head, accurate eye movements can be generated to sounds in complete darkness. This ability necessitates the use of eye position information. So far, however, sound localization has been investigated mainly with a fixed head position, usually straight ahead. Yet the auditory system may rely on head motor information to maintain a stable and spatially accurate representation of acoustic targets in the presence of head movements. We therefore studied the influence of changes in eye-head position on auditory-guided orienting behavior of human subjects. In the first experiment, we used a visual-auditory double-step paradigm. Subjects made saccadic gaze shifts in total darkness toward brief broadband sounds presented before an intervening eye-head movement that was evoked by an earlier visual target. The data show that the preceding displacements of both eye and head are fully accounted for, resulting in spatially accurate responses. This suggests that auditory target information may be transformed into a spatial (or body-centered) frame of reference. To further investigate this possibility, we exploited the unique property of the auditory system that sound elevation is extracted independently from pinna-related spectral cues. In the absence of such cues, accurate elevation detection is not possible, even when head movements are made. This is shown in a second experiment where pure tones were localized at a fixed elevation that depended on the tone frequency rather than on the actual target elevation, both under head-fixed and -free conditions. To test, in a third experiment, whether the perceived elevation of tones relies on a head- or space-fixed target representation, eye movements were elicited toward pure tones while subjects kept their head in different vertical positions. It appeared that each tone was localized at a fixed, frequency-dependent elevation in space that shifted to a limited extent with changes in head elevation. Hence information about head position is used under static conditions too. Interestingly, the influence of head position also depended on the tone frequency. Thus tone-evoked ocular saccades typically showed a partial compensation for changes in static head position, whereas noise-evoked eye-head saccades fully compensated for intervening changes in eye-head position. We propose that the auditory localization system combines the acoustic input with head-position information to encode targets in a spatial (or body-centered) frame of reference. In this way, accurate orienting responses may be programmed despite intervening eye-head movements. A conceptual model, based on the tonotopic organization of the auditory system, is presented that may account for our findings.  (+info)

ITD - Interaural time difference. Looking for abbreviations of ITD? It is Interaural time difference. Interaural time difference listed as ITD
In this post, I want to come back on a remark I made in a previous post, on the relationship between vision and spatial hearing. It appears that my account of the comparative study of Heffner and Heffner (Heffner & Heffner, 1992) was not accurate. Their findings are in fact even more interesting than I thought. They find that sound localization acuity across mammalian species is best predicted not by visual acuity, but by the width of the field of best vision.. Before I comment on this result, I need to explain a few details. Sound localization acuity was measured behaviorally in a left/right discrimination task near the midline, with broadband sounds. The authors report this discrimination threshold for 23 mammalian species, from gerbils to elephants. They then try to relate this value to various other quantities: the largest interaural time difference (ITD), which is directly related to head size, visual acuity (highest angular density of retinal cells), whether the animals are predatory or ...
TY - GEN. T1 - Sound Source Localization for Hearing Aid Applications using Wireless Microphones. AU - Farmani, Mojtaba. AU - Pedersen, M. S.. AU - Jensen, Jesper. PY - 2018. Y1 - 2018. N2 - State-of-the-art hearing AIDS (HAs) can connect to a wireless microphone worn by a talker of interest.This ability allows HAs to have access to almost noise-free sound signals of the target talker.In this paper, we aim to estimate the direction of arrival (DoA) of the target signal,given access to the noise-free target signal. Knowing the DoA of the target signal enables HAs to spatialize the wirelessly received target signals.The proposed estimator is based on a maximum likelihood (ML) approach and a database of DoA-dependent relative transfer functions (RTFs),and it supports both monaural and binaural microphone array configurations. For binaural configurations,we propose an information fusion strategy, which decreases the number of parameters required to be wirelessly transferred between the HAs. Further, ...
Sensory systems evolved to encode biologically important information carried by noisy signals. Elucidating mechanisms of robust sensory coding remains a basic problem in neuroscience (Rieke et al., 1999). One highly conserved sensory capacity that lends itself to the study of this problem is that of sound source localization. Sound localization subserves predator avoidance, prey capture, situational awareness, and communication. In mammals, relative differences in the time of arrival and intensity of sound at the two ears, interaural time differences (ITDs) and interaural level differences (ILDs), respectively, provide the major cues to sound source location in the horizontal plane (Grothe et al., 2010). ITDs are encoded primarily by neurons of the medial superior olive (MSO), which are exquisitely sensitive to the relative timing of the signal at each ear (Goldberg and Brown, 1969). However, natural perturbations in the relative timing of the signal at each ear (e.g., due to reverberation) ...
Background: Autism spectrum disorders (ASDs) are associated with auditory hyper- or hyposensitivity; atypicalities in central auditory processes, such as speech-processing and selective auditory attention; and neural connectivity deficits. We sought to investigate whether the low-level integrative processes underlying sound localization and spatial discrimination are affected in ASDs.. Methods: We performed 3 behavioural experiments to probe different connecting neural pathways: 1) horizontal and vertical localization of auditory stimuli in a noisy background, 2) vertical localization of repetitive frequency sweeps and 3) discrimination of horizontally separated sound stimuli with a short onset difference (precedence effect).. Results: Ten adult participants with ASDs and 10 healthy control listeners participated in experiments 1 and 3; sample sizes for experiment 2 were 18 adults with ASDs and 19 controls. Horizontal localization was unaffected, but vertical localization performance was ...
Although many studies have examined the precedence effect (PE), few have tested whether it shows a buildup and breakdown in nonhuman animals comparable to that seen in humans. These processes are thought to reflect the ability of the auditory system to adjust to a listeners acoustic environment, and their mechanisms are still poorly understood. In this study, ferrets were trained on a two-alternative forced-choice task to discriminate the azimuthal direction of brief sounds. In one experiment, pairs of noise bursts were presented from two loudspeakers at different interstimulus delays (ISDs). Results showed that localization performance changed as a function of ISD in a manner consistent with the PE being operative. A second experiment investigated buildup and breakdown of the PE by measuring the ability of ferrets to discriminate the direction of a click pair following presentation of a conditioning train. Human listeners were also tested using this paradigm. In both species, performance was better
Eric Mousset ,[email protected], wrote: ,The department I am working for is considering purchasing some ,equipment for research purposes in binaural hearing (HRTF-based sound ,source localisation, amongst others). ,The computer on which we are intending to run the (real-time) binaural ,analyses is a PC running LINUX. , ,1) Part of the question is general and applies to anyone interested , in real-time sound source localisation with a pair of mics as input: , There are apparently two main options for the acquisition of the , acoustic signals: a sound-card vs an A/D convertor. How do they compare? , ,2) Linux-oriented question: Do most cards have drivers for Linux? , , ,Many thanks in advance. , , ,Eric. We at Mark Konishis lab, Caltech, do exactly what you want to do, it seems. We use have computers running Linux 2.x and SunOS 4.1.x to do both behavioral studies and neurophysiology concerning sound localization in owls. We have done experiments with HRTF-based sound source localization, ...
The network underlying sound localization is similar in all vertebrates, although the exact mechanisms underlying the use, the neural extraction and the neural representation may be different in different vertebrate classes. This is not surprising, because, for example birds and mammals have independently developed for several hundreds of millions of years. We study the representation of sound-localization cues at several levels, from the first station of binaural detection in nucleus laminaris to the midbrain-nucleus colliculus inferior, where a first remodeling of the representation occurs and the forebrain, where a further remodeling occurs. We mainly use extracellular recording techniques and combine these with theoretical results. The groups of Thomas Kuenzel and Marcus Wirth complement our approach by working with chicken, an auditory generalist, on the molecular and cellular levels. ...
The term binaural literally signifies to hear with two ears, and was introduced in 1859 to signify the practice of listening to the same sound through both ears, or to two discrete sounds, one through each ear. It was not until 1916 that Carl Stumpf (1848-1936), a German philosopher and psychologist, distinguished between dichotic listening, which refers to the stimulation of each ear with a different stimulus, and diotic listening, the simultaneous stimulation of both ears with the same stimulus.[27] Later, it would become apparent that binaural hearing, whether dichotic or diotic, is the means by which sound localization occurs.[27][28][page needed] Scientific consideration of binaural hearing began before the phenomenon was so named, with speculations published in 1792 by William Charles Wells (1757-1817) based on his research into binocular vision.[29] Giovanni Battista Venturi (1746-1822) conducted and described experiments in which people tried to localize a sound using both ears, or ...
Virtual Spaces as Artifacts: Implications for the Design of Educational CVEs: 10.4018/jdet.2004100106: Space is important for learning and socializing. Cyberworlds provide a new space for socialization and communication with a great degree of flexibility
Although we frequently take advantage of memory for objects locations in everyday life, understanding how an objects identity is bound correctly to its location remains unclear. Here we examine how information about object identity, location and crucially object-location associations are differentially susceptible to forgetting, over variable retention intervals and memory load. In our task, participants relocated objects to their remembered locations using a touchscreen. When participants mislocalized objects, their reports were clustered around the locations of other objects in the array, rather than occurring randomly. These swap errors could not be attributed to simple failure to remember either the identity or location of the objects, but rather appeared to arise from failure to bind object identity and location in memory. Moreover, such binding failures significantly contributed to decline in localization performance over retention time. We conclude that when objects are forgotten they do not
Petoe, M. A., McCarthy, C. D., Shivdasani, M. N., Sinclair, N. C., Scott, A. F., Ayton, L. N., … Blamey, P. J. (2017). Determining the Contribution of Retinotopic Discrimination to Localization Performance With a Suprachoroidal Retinal Prosthesis. Investigative Opthalmology & Visual Science, 58(7), 3231. https://doi.org/10.1167/iovs.16-21041. View more ...
Interaural time differences (lTDs) are one of the cues used for binaural sound localisation. In birds, RDs are computed in nucleus laminaris (NL), where a place code of azimuthal location first emerges. In chickens, NL consists of a monolayer of bitufted cells that receive segregated inputs from ipsi- and contralateral nucleus magnocellularis (NM). In ham owls, the monolayer organisation, the bitufted morphology, and the segregation of inputs have been lost, giving rise to a derived organisation that is accompanied by a reorganisation of the auditory place code. Although chickens and ham owls have been the traditional experimental models in which to study lTD coding, they represent distant evolutionary lineages with very different auditory specialisations. Here we examined the structure of NL in several bird lineages. We have found only two NL morphotypes, one of which appears to have emerged in association with high frequency hearing ...
The auditory circuit that we are studying helps to locate sound sources in space and illustrates beautifully how development is instrumental in shaping function. A major cue for an animal to locate sound sources compares the arrival time of the sound at the two ears. The time difference in sound reaching each ear, termed interaural time difference (ITD), varies from zero (sound directly ahead) to approximately 300 microseconds (depending on the size of head). The circuit operates as an AND logical gate where synaptic input from the ear closest to the sound sets up a map of space along an array of neurons which is compared to synaptic input from the ear furthest away from the sound. This identifies the location of sound in a subset of neurons along this array through dendritic integration to detect temporal coincidence of the two inputs. This calculation is performed at each characteristic frequency of sound using different arrays of neurons that are juxtaposed to form a sheet of cells in the ...
Figure 4. Intrinsic regulation of the Erev for Cl− channels in LLDp neurons. A, eIPSCs from a sample neuron were inward initially (black) and shifted polarity (blue) during whole-cell recording. B, The eIPSC amplitudes are plotted over time showing that the shift occurred at about 8 min after whole-cell recording began. C, Population data of eIPSC amplitude over time (n = 16). eIPSCs were largely observed as inward currents initially, but in many cells the current became outward over time during whole-cell recordings. The shift in polarity generally occurred within 20 min. D, After the eIPSC became outward, bath application of furosemide (500 μm), a KCC2 antagonist, returned the eIPSC to an inward current. Inset, eIPSC traces correspond to the following conditions: control (a, 1 min), after the polarity shift (b, 10 min), and during furosemide application (c, 28 min). E, The Erev during control (left), after the polarity shift (middle, +10 min), and during furosemide application (right) was ...
United States Patent 3,423,543 LOUDSPEAKER WITH PIEZOELECTRIC WAFER DRIVING ELEMENTS Harry W. Kompanek, 153 Rametto Road, Santa Barbara, Calif. 93103 Filed June 24, 1965, Ser. No. 466,599 US. Cl. 179-410 Int. Cl. Htl4r 15/00 Claims ABSTRACT OF THE DTSCLQSURE This invention relates to a loudspeaker and more particularly to a loudspeaker driven by piezoelectric means. As is well known, a piezoelectric wafer such as a barium titanate ceramic, produces an electric voltage when it is mechanically deformed. Conversely, when an AC. voltage is applied across the wafer, the wafer is mechanically deformed and tends to cup. When the piezoelectric wafer is secured to a member such as a plate and an A.C. voltage is applied across the wafer, the wafer causes the entire plate to cup back and forth and to produce sound. As the characteristics of the deformations or vibrations in the plate depend upon the characteristics of the voltage applied across the piezoelectric wafer, sound of substantially any frequency ...
Goodman DFM, Brette R, 2010, Spike-timing-based computation in sound localization., PLoS Comput Biol, Vol: 6 Spike timing is precise in the auditory system and it has been argued that it conveys information about auditory stimuli, in particular about the location of a sound source. However, beyond simple time differences, the way in which neurons might extract this information is unclear and the potential computational advantages are unknown. The computational difficulty of this task for an animal is to locate the source of an unexpected sound from two monaural signals that are highly dependent on the unknown source signal. In neuron models consisting of spectro-temporal filtering and spiking nonlinearity, we found that the binaural structure induced by spatialized sounds is mapped to synchrony patterns that depend on source location rather than on source signal. Location-specific synchrony patterns would then result in the activation of location-specific assemblies of postsynaptic neurons. We ...
METHOD AND DEVICE FOR ENHANCED SOUND FIELD REPRODUCTION OF SPATIALLY ENCODED AUDIO INPUT SIGNALS - A method for sound field reproduction into a listening area of spatially encoded first audio input signals according to sound field description data using an ensemble of physical loudspeakers. The method includes computing reproduction subspace description data from loudspeaker positioning data describing the subspace in which virtual sources can be reproduced with the physically available setup. Then, second and third audio input signals with associated sound field description data, in which second audio input signals include spatial components of the first audio input signals located within the reproducible subspace and third audio input signals include spatial components of the first audio input signals located outside of the reproducible subspace. A spatial analysis is performed on second audio input signals to extract fourth audio input signals corresponding to localizable sources within the ...
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This paper presents a conceptual framework for sound diffusion: the process of presenting multiple channels of audio to an audience in a live performance context, via loudspeakers. Terminology that allows us to concisely describe the task of sound diffusion is defined. The conceptual model is described using this terminology. The model allows audio channels (sources) and loudspeakers (destinations) to be grouped logically, which, in turn, allows for sophisticated abstract methods of control that supercede the restrictive one-fader-one-loudspeaker approach. The Resound project - an open source software initiative conceived to implement and further develop the conceptual model - is introduced. The aim is, through further theoretical and practice led research into the conceptual model and software respectively, to address the technical, logistical and aesthetic issues inherent in the process of sound diffusion.. ...
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The comparison operators, and the MAX, MIN, BETWEEN, LIKE, and IN operators, are collation sensitive. The string used by the operators is assigned the collation label of the operand that has the higher precedence. The UNION operator is also collation sensitive, and all string operands and the final result is assigned the collation of the operand with the highest precedence. The collation precedence of the UNION operands and result are evaluated column by column.. The assignment operator is collation insensitive and the right expression is cast to the left collation.. The string concatenation operator is collation sensitive, the two string operands and the result are assigned the collation label of the operand with the highest collation precedence. The UNION ALL and CASE operators are collation insensitive, and all string operands and the final results are assigned the collation label of the operand with the highest precedence. The collation precedence of the UNION ALL operands and result are ...
In order to provide a flexible means for exploring various spatial audio algorithms in sound field synthesis, a massive multichannel system consisting of an array of 640 loudspeakers was created. It is based on an audio network that distributes discrete audio signals to a grid of amplifiers. Given the massive size of the loudspeaker array, special means for configuring, routing, control, reliability, flexibility, redundancy, economics, and cabling had to be developed. The resulting system...
Meyer Sound announces that its CAL column array loudspeakers are the first loudspeaker products to receive the AVnu certification from AVnu Alliance, the industry consortium that certifies Audio Video Bridging (AVB) devices for interoperability. This certification is the global seal given to devices that have implemented the IEEE AVB standards and passed AVnu Alliances rigorous […]
This thesis improves the audio display for multiple Morse communications. Factors considered to improve the audio display are frequency of source, volume level of source, and methods of unmasking. The best frequency and volume level of a Morse source is 500 Hz at 70 dB sound pressure level. Two types of masking are researched frequency masking and expectation driven masking. Experiments showed by amplifying high pitched sources the effects of frequency masking are minimized. Other methods to compensate for frequency masking are 3-D sound and the placement of a source out of phase between the ears. Morse code recognition at 500 Hz is greatest when presented at the NO S-pi condition. Greatest unmasking for broadband signals occurs at 3-D locations between 60 and 90 deg where the largest ITD interaural time difference exists. This thesis theorizes and confirms that greatest unmasking of a source tone in 3-D sound corresponds to the spatial location that gives an ITD equal to a 180 deg phase shift for that
Regardless of the size of the installation, JBL Control Contractor Series has you covered. When architectural constraints require an ultra-compact solution, pendant or surface mount speakers such as the Control 62P or Control 23-1 are great options. But for larger spaces with wider coverage needs, you can count on the Control 28-1 with its 8-inch woofer and 120W of power handling to fill the room.. Pro Tip , Control 226CT in-ceiling loudspeakers and Control 67 HC/T pendant speakers are perfect for larger rooms with high ceilings, which often require loudspeakers that can produce higher output with excellent clarity.. ...
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Ba Sao Investment Co., Ltd. equipped Van Lang Universitys concert hall with a JBL VRX932LAP line array loudspeaker system and VRX918SP line array subwoofers for class-leading sound with brilliant highs and deep lows. JBL PRX815W floor monitors provide speakers and performers with clear, intelligible sound while on stage. Ba Sao also selected JBL LSR305 powered studio monitors for their detailed, accurate sound.. Chosen for its unrivaled sound quality and intuitive workflow, Ba Sao installed a Soundcraft Si Impact digital mixing console to provide front-of-house engineers with total control over the sound in the concert hall. A Soundcraft Mini Stagebox 32R and dbx dB12 direct boxes offer rugged, durable solutions for connecting equipment on stage.. In order to capture exceptional sound for speakers and performers on stage, Ba Sao provided the University with AKG D5 professional dynamic vocal microphones and WMS470 D5 professional multichannel wireless microphone systems. AKG IVM 4 in-ear ...
The current working driver which enables the sound source to move completely along the sphere is VBAP inspired by Ville Pulkki. Initial tests and subject response have show VBAP to produce high accuracy with point source localization in accordance with the virtual space. Further implementations involving physical modeling for PD have been added to the interface such as a spring. Tests have been done in which 9 point sources attached along a stretchy string move along the sphere in which the user purturbs it in real-time with great results. In Progress ...
Built upon an entirely new platform, pioneering enclosures are the most flexible and scalable from the Italian manufacturer to date If theres anything factual among all of the Winter NAMM rumors youve heard so far, its that dBTechnologies will indeed unveil a forward-thinking generation of new VIO loudspeakers in booth #18219 (North Hall, Level 2) […]
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For the spatial task, participants navigated a path through virtual space; for the procedural task, they indicated under which of four position markers a dot appeared by rapidly pressing a keystroke. For the unrelated oddball task, participants lay in the scanner and mentally counted the deviant sounds embedded in a monotonous soundtrack. These oddball sessions occurred immediately before a task providing baseline brain activity immediately after a 30-minute training session, and again after a 30-minute rest period. A short behavioral test followed the last oddball session, then participants were scanned a fourth time while performing their task to identify brain regions associated with each task. Two weeks later, individuals were tested on the alternate task, so the researchers could compare post-training modulated brain activity associated with each task ...
Your room will be a source of serious consternation for years to come for other pioneers in the speaker field. Both of you are well aware that most consumers dont have reverberant rooms like yours. You work hard to find compatible components. Why not exercise the same diligence in finding a compatible room? Peter Mitchells favorite loudspeaker over $5000, as listed in Critics Choice, is the Altec Bias 550. He is a senior, well-respected audio journalist. Where, oh where is truth?
Andrew Robinson says this incredibly affordable speaker could well be an enthusiast's entry point and final destination when shopping for a loudspeaker....
Leanplum is a mobile engagement platform that provides brands a place to look forward to the needs of their customers. The platform enables the brands to stay connected with the customers, which helps them to understand the need and wants of the customers and enables the brands to send the messages at the right time for active campaigning. The platform offers comprehensive campaign analytics, automatic message scheduling, and data science reports to make the relationship of the customer more resilient with the brands.. It allows the brand to set their campaigns according to demographic information or behavioral attributes to deliver relevant messages to the customers. Leanplum allows customization based on localization, technology, data enrichment, and many other aspects. The platform allows the companies to earn the trust of the customers by sending them the relevant and needed data. It comes with a feature of Campaign Composer that enables brands to build highly contextual campaigns to drive ...
Richard Shahinian has been offering loudspeakers to music lovers for more than 15 years. I use the word offering here in its strictest sense, because Dick has never sold his products-by pushing them. Indeed, he is probably one of the worst self-promoters in the business. If we think of soft sell in the usual context of laid-back and low-pressure, then Shahinians approach would have to be called mushy sell.
We continue to study the axial patterning of the Drosophila oocyte, with the primary emphasis on localization and translational regulation of mRNAs that encode localized patterning determinants. Bruno protein is crucial for this process, and serves to recognize the oskar mRNA and control its activity. Bruno acts as both a repressor and an activator of translation, and we are asking how Bruno performs each role and how it decides whether to repress or activate. Our work has also led us to focus on the role of cytoplasmic ribonucleoprotein complexes in this regulation, as well as on the role of small regulatory RNAs.. ...
GW is a shared virtual space which acts to broadcast messages of certain coalitions to all processors, in order to recruit others to join. In summary, GW serves to integrate many competing and cooperating networks of processes. Global behavior will be driven by a myriad of local micro-behaviors rather than whats happening in current networks, where a former built knowledge representation is used to manage the networks behavior. Practically the approach permits to rehearse global behaviors prior enacting local processes; said behaviors are evaluated, and the relative salience of a set of concurrently executable actions can be modulated as a result: those behaviors whose outcome is associated to a gain (or reward) become more and more salient and, at the end, selected and executed (e.g. with winner-take-all-strategy ...
Through one-on-one meetings, researchers, biotech companies and business development executives from biopharmaceutical companies will be able to network in a virtual space, discuss latest research from oncology congresses, pitch ideas and partner to prioritize research efforts that hold the most promise.
VR is proving very effective for connecting teams, locally and globally, to help make better, more informed decisions collectively. An architect could meet with a client in a shared virtual environment for clear communication, leading to better understanding of design intent and faster approvals.. A façade specialist in London could meet with an architect in New York to find an engineering solution to an architectural aesthetic. Construction teams can use VR to virtually simulate a building and catch errors much earlier on - before they become expensive mistakes on site.. Collaborating in VR means everyone can experience the virtual space simultaneously at 1:1 scale. Software products including IrisVR, InSiteVR, Trezi and The Wild are specifically designed for this task and feature tools for measuring, markup and voice-to-text annotation. Objects within the model can also be clicked on to reveal the associated BIM data.. Collaboration platform Autodesk® BIM 360® is emerging as a central hub ...
Presentations, postings, and messages should not contain promotional materials, product announcements, or solicitation for services. APCO reserves the right to remove such messages.. Participants should not copy or take screenshots of Q&A or any chat room activity that takes place in the virtual space. APCO reserves the right to take any action deemed necessary and appropriate, including immediate removal from the event without warning or refund, in response to any incident of unacceptable behavior. Additional questions can be directed to the APCO Events Department at [email protected] or (386)322-2500. ...
I have talked a lot about Mixed Reality Entertainment on my media blog personalizemedia and how one of the most innovative uses of virtual space is to extend the TV or Film property into a 24/7, participatory environment. The reason for doing this is to drive traffic to the TV or Film but also to keep existing followers loyal to the branded property. There is more detail about the reasoning on my posts on Big Brother in Second Life (Witnessing the Birth of an Entertainment Form) as well as posts nearby on CSI in Second Life and many of MTVs properties in There.com. There are moves around the world including BBC and many European broadcasters who are creating worlds alongside and in some cases in front of the TV episodics. So it is great to see this trend continuing as the current series of Heroes being extended into Habbo. The agreement was brokered by the William Morris Agency and marks the first time Heroes has partnered with a virtual world.. ..but not in the usual way. As reported by LA ...
Whether we like it or not change is disruptive. We are moving out of old routines into new patterns of work involving learning new things, undertaking new responsibilities possibly with new people, in new physical and virtual spaces. At the same time, as we are setting up anew, we will probably also have to deliver our existing targets the conventional way. So for a while we work in the order of things past as well as trying to tame the chaos of things to be. The new continuity is constant change. I suggest it should be a permanent state of affairs in contemporary organisations ...
Join Alice, Bob and Cheryl as we chat with Jo McLeay about how her network has been creating a path for sustainability before and after the conference. A little while into the show Sue Tapp hopped into the chat room and then she joined the conversation. It was great to hear about how our friends in Australia are creating virtual spaces for conversations can happen before, during and after conferences. Jo gives some great advice for anyone attending NECC. Here is the Delicious: Geek of the Week! Here is the Chat: The chat has some great impromptu links for avatars, geek of the week and other random conversations which are great. 19:11:23 alicebarr -, -EdTechTalk: http://docs.google.com/?pli=1#folders/folder.0.37b35de4-e192-4ba3-9790-7... ...
The symbol of Power outside the virtual space of Cattle Depot. A giant panda is sitting on the symbol and devouring bamboo ...
Discovering the demise of a once much-loved (by me) website this morning got me pondering my public online presence, which is now in its 17th year. In the rapidly-evolving world of wires in which so many of us now live, this makes me something of a greybeard in a virtual space that I never imagined…
The latest episode was a young woman who reached through a crowd of other standing people to touch me on the arm and wave in a frantic pantomime that I could have her seat. [...] precedence based on age is the fairest system. Why have a precedence system at all (you may ask)? Because the absence of an accepted one results in the me-first system of shoving. Miss Manners only hopes that by that time, the concept of respect for the elderly will not have been killed off by misplaced vanity.
WASHINGTON, March 24, 2009 - The Federal Communications Commission on Tuesday outlined the procedures by which parties wishing to provide written or oral
Ultrasound, also called sonography or ultrasonography, it requires disclosure of certain body parts to high-frequency sound waves to produce images from inside the body. Ultrasound does not use ionizing radiation (used in X-rays). Because ultrasound images are captured in real time, can show the structure and movement of internal organs, and blood flowing through blood vessels ...
Ultrasound imaging, or sonography, produces images of the inside of the body using high-frequency sound waves. These images are captured in real-time, and are able to show the structure and movement of the organs.. Ultrasound imaging can be used to monitor and diagnose a wide range of conditions within nearly any system of the body. This test may be performed on patients experiencing pain, swelling or infection in a certain area of the body ...

No data available that match "sound localization"

... and sound localization. For sound localization, the sound of the rubber boats engine was randomly delivered by one speaker at ... There was no difference in the sound localization error between the regular mask and the ProEar 2000 mask. Conclusions: The ... Hypothesis: Underwater hearing acuity and sound localization are improved by the presence of an air interface around the pinnae ... Sound lateralization on land is largely explained by the mechanisms of interaural intensity differences and interaural temporal ...
... to perform the localization function. The unique light fingerprints with complex and tiny differences are caused by the ... This paper introduces a low-cost indoor localization system using sound spectrum of light fingerprint. An Artificial ... End-to-End Deep Learning by MCU Implementation: Indoor Localization by Sound Spectrum of Light Fingerprints. Authors ... This paper introduces a low-cost indoor localization system using sound spectrum of light fingerprint. An Artificial ...
Recent studies of sound localization have shown that adaptation and learning involve multiple mechanisms that operate at ... Because there is no explicit map of auditory space in the cortex, studies of sound localization may also provide much broader ... Recent studies of sound localization have shown that adaptation and learning involve multiple mechanisms that operate at ... Because there is no explicit map of auditory space in the cortex, studies of sound localization may also provide much broader ...
How to efficiently measure intensity-based ISO sound power. ... sound intensity for sound power and sound source localization. ... How to use sound intensity for sound power and sound source localization. Share ... How to use sound intensity for sound power and sound source localization ... How to use sound intensity for sound power and sound source localization ...
Sound Localization. The brain has an amazing ability to identify the source of sounds around you. When driving, you can tell ... How does the brain locate sound sources?. March 15, 2013. March 5, 2017. knowingneurons Audition, auditory, Binaural, Doppler ... effect, Ear, Frequency, Hearing, Horizontal, Monaural, Pinna, Sound, ...
The ease of use and advanced beamforming algorithms of the HEAD VISOR acoustic camera allow sound sources to be located ... Sound Source Localization In order to optimize product sounds, it is necessary to know the exact point of origin of a sound ... This makes possible to identify the cause of disruptive sound components and rectify these effectively, optimize sound ... The ease of use and advanced beamforming algorithms of the HEAD VISOR acoustic camera allow sound sources to be located ...
Reply To: Sound source localization. HARK FORUM › Sound source localization › Reply To: Sound source localization ...
Bayesian extension of MUSIC for sound source localization and tracking」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。 ... Otsuka, T, Nakadai, K, Ogata, T & Okuno, HG 2011, Bayesian extension of MUSIC for sound source localization and tracking, ... Otsuka, T., Nakadai, K., Ogata, T., & Okuno, H. G. (2011). Bayesian extension of MUSIC for sound source localization and ... Bayesian extension of MUSIC for sound source
... P. Wagener, Vertical Thread Migration in FPGA Based Sound ... Vertical Thread Migration in FPGA Based Sound Localization. Universität Paderborn, 2014.. P. Wagener, Vertical Thread Migration ... in FPGA based Sound Localization. Universität Paderborn, 2014.. Wagener, Peter. Vertical Thread Migration in FPGA Based Sound ... Wagener P. Vertical Thread Migration in FPGA Based Sound Localization. Universität Paderborn; 2014. ...
Experimenting with Sound Localization and Arduino. Wagner Posted on April 3, 2015. Posted in Showcase 9 Comments ... Sample Reading Sound Localization. Theres still a long way to go to get this right, the logic will not work specially close to ... 9 Comments on "Experimenting with Sound Localization and Arduino" * erdem fırat says: ... Reading further about sound amplification, if thats your only porpuse, an LM386 would produce better sound quality. For the ...
Sound localization with communications headsets: comparison of passive and active systems.. Authors: Abel, Sharon M. Tsang, ... Horizontal plane sound localization was compared in normal-hearing males with the ears unoccluded and fitted with Peltor H10A ... Abel SM, Tsang S, Boyne S. Sound localization with communications headsets: comparison of passive and active systems. Noise & ... Studies have demonstrated that conventional hearing protectors interfere with sound localization. This research examines ...
An algorithm for the robust localization of a vehicle using both displacement tracking and sound localization is proposed. The ... N2 - An algorithm for the robust localization of a vehicle using both displacement tracking and sound localization is proposed ... AB - An algorithm for the robust localization of a vehicle using both displacement tracking and sound localization is proposed ... abstract = "An algorithm for the robust localization of a vehicle using both displacement tracking and sound localization is ...
... but I get no sound from my own character, whether from moving, attacking or using skills. I had sound before entering the area ... Bug] Regria Monastery sound Bugs and Localization Feedback Bugs and Localization Feedback ... Currently I reached Regria Monastery and the background music works, the npc voices work, but I get no sound from my own ... I had sound before entering the area, however Im not exactly sure when I lost it. ...
... s sound localization system where space-specific neurons owe their selectivity to multiplicative tuning to sound localization ... sound localization system where space-specific neurons owe their selectivity to multiplicative tuning to sound localization ... sound localization system where space-specific neurons owe their selectivity to multiplicative tuning to sound localization ... sound localization system where space-specific neurons owe their selectivity to multiplicative tuning to sound localization ...
UMD Team Receives Best Demo Award for Mobile Sound Localization System. Their innovative design explores the interaction of ...
Sound source localization test; localization performance quantified using the root mean square (RMS) error. RESULTS:. Sound ... Sound Localization in Patients With Congenital Unilateral Conductive Hearing Loss With a Transcutaneous Bone Conduction Implant ... Evaluation of within-subject performance differences for sound source localization in a horizontal plane. SETTING:. Tertiary ... Sound Localization in Patients With Congenital Unilateral Conductive Hearing Loss With a T ...
Current status of Localization Agencies in Korea for Game contents.. For many game publishers or developers planning to launch ... Dillon on [MUSAI] The Significance of Sound in Video Games. *KV on [MUSAI] Hidden Contributor of Cyberpunk 2077 Korean ... Around 2,000 translation companies are known to be active in Korea within the localization industry. For more accurate data, ... I would like to share some information related to the local localization companies in Korea. ...
Dive into the research topics of Effect of cochlear implant devices on sound localization in noise and reverberation. ... Effect of cochlear implant devices on sound localization in noise and reverberation. ...
Browse and apply for Audio / Sound jobs at Blizzard Entertainment ... Apply for Localization Audio Producer job with Blizzard ...
The Hierarchy of Sound Processing Sound Localization Balance The Somatosensory System Touch Temperature Pain. Case Study: The ...
Human sound localization is an important computation performed by the brain. Models of sound localization commonly assume that ... N2 - Human sound localization is an important computation performed by the brain. Models of sound localization commonly assume ... AB - Human sound localization is an important computation performed by the brain. Models of sound localization commonly assume ... abstract = "Human sound localization is an important computation performed by the brain. Models of sound localization commonly ...
How Important Is Sound Localization?. February 24, 2015. February 25, 2015. Wayne Staab Leave a comment Binaural summation / ... Localization / Loudness squelch / Raymond Carhart / SNR / Sound localization / Speech intelligibility ... Localization / Loudness squelch / Masking level differences / Sound localization ... Head shadow effect Sound localization Loudness squelch Facilitation in noise (masking level difference) Binaural summation ...
... completed two tasks of sound localization. In a dark, anechoic, and sound-proof room, sound stimuli (broadband noise) were ... localization of sound sources is systematically shifted to correct for the deviation of the sound from visual positions during ... pathway mainly subserving sound identification and a posterodorsal (where) stream mainly subserving sound localization. ... Sound localization was investigated in patients with homonymous hemianopia, a visual field defect characterized by a loss of ...
This research focuses on sound localization experiments in which subjects report the position of an active sound source by ... AB - This research focuses on sound localization experiments in which subjects report the position of an active sound source by ... This research focuses on sound localization experiments in which subjects report the position of an active sound source by ... Abstract: This research focuses on sound localization experiments in which subjects report the position of an active sound ...
The base of the sound is thick and powerful, so there is not much of an impression that the sound sounds thin, which is often ... Still, there is a drawback in that the high frequency range tends to sound a bit hysterical when the volume is turned up. ... It makes a good first impression with its relatively clear localization and glossy, impressive mid and high frequencies. ... The base of the sound is thick and powerful, so there is not much of an impression that the sound sounds thin, which is often ...
How does the brain compute sound localisation without the equations? cognitive-psychology computational-modeling theoretical- ...
Differing Bilateral Benefits for Spatial Release From Masking and Sound Localization Accuracy Using Bone Conduction Devices. ... Differing Bilateral Benefits for Spatial Release From Masking and Sound Localization Accuracy Using Bone Conduction Devices. ...
Sound title [Pour géo-localisation] creator Blutey contributor contributor - Auteur subject Ethnomusicology subject Research ...
  • We assessed how processing of these cues depends on whether spatial information is task relevant and whether brain activity correlates with subjects' localization performance. (elsevier.com)
  • We conclude that binaural coherence cues are processed throughout the auditory cortex and that these cues are used in posterior regions for successful auditory localization. (elsevier.com)
  • Readers will appreciate that sound localization is inherently a neuro-computational process (it needs to process on implicit and independent acoustic cues). (soundmain.info)
  • The model was tested on neural and behavioral responses in the barn owl's sound localization system where space-specific neurons owe their selectivity to multiplicative tuning to sound localization cues interaural phase (IPD) and level (ILD) differences. (elsevier.com)
  • Some patients with congenital UCHL might be capable of developing improved horizontal plane localization abilities with the binaural cues provided by this device . (bvsalud.org)
  • Macpherson, EA, and Middlebrooks, JC: Listener weighting of cues for lateral angle: the duplex theory of sound localization revisited, J. Acoust. (uci.edu)
  • Two-ear (binaural) listening encodes information on the direction and distance of a sound source by several cues. (ringbuffer.org)
  • In addition to the interaural cues, the coloration gives information on the elevation of a sound source, as well as on opposing azimuth angles which have identical interaural cues. (ringbuffer.org)
  • Models of sound localization commonly assume that sound lateralization from interaural time differences is level invariant. (njit.edu)
  • Previous studies on auditory space perception in patients with neglect have investigated localization of free-field-sound stimuli or lateralization of dichotic stimuli that are perceived intracranially. (researchgate.net)
  • The Auditory System and Human Sound-Localization Behavior - The Auditory System and Human Sound-Localization Behavior provides a comprehensive account of the. (soundmain.info)
  • We further show that this model describes the owl's localization behavior in azimuth and elevation. (elsevier.com)
  • The quantum behavior of dynamical localization bucks the assumption that a cold object will always steal heat from a warmer object. (umd.edu)
  • The occurrence of these lesions is an bruxism change the magnitude, direction, frequency, increasingly common finding in dental clinical duration and localization of the occlusal contacts, practice with prevalence rates up to 85% in some which result in different biomechanical behavior in populations (QUE et al. (bvsalud.org)
  • The findings suggest that underwater sound perception is realized by the middle ear rather than by bone conduction, at least in shallow water conditions, according to divers tested in a swimming pool. (semanticscholar.org)
  • In human physiology and psychology , sound is the reception of such waves and their perception by the brain . (wikipedia.org)
  • Sound can also be viewed as an excitation of the hearing mechanism that results in the perception of sound. (wikipedia.org)
  • Perception of moving sound sources obeys different brain processes from those mediating the localization of static sound events. (springeropen.com)
  • Timing differences between the two ears can be used to localize sounds in space, but only when the inputs to the two ears have similar spectrotemporal profiles (high binaural coherence). (elsevier.com)
  • Zimmer, U & Macaluso, E 2005, ' High binaural coherence determines successful sound localization and increased activity in posterior auditory areas ', Neuron , vol. 47, no. 6, pp. 893-905. (elsevier.com)
  • The objective was to explore localization performance in the horizontal plane in an informal setting and with little training, which are conditions that are similar to those typically encountered in consumer applications of binaural audio. (aes.org)
  • Abstract: This research focuses on sound localization experiments in which subjects report the position of an active sound source by turning toward it. (aes.org)
  • Underwater Acoustic Source Localisation Among Blind and Sighted Scuba Divers: Comparative study. (semanticscholar.org)
  • In addition, sound intensity measurements can identify and quantify critical sound sources and detect acoustic leaks and hot spots. (siemens.com)
  • The ease of use and advanced beamforming algorithms of the HEAD VISOR acoustic camera allow sound sources to be located precisely at the blink of an eye. (head-acoustics.com)
  • F. Jacobsen, 'Sound Intensity and its Measurement and Applications,' Acoustic Technology, Department of Electrical Engineering Technical University of Denmark, 2011. (mostwiedzy.pl)
  • In order to present natural-like sound locations to the subjects, acoustic stimuli convolved with individual head-related transfer functions were used. (researchgate.net)
  • In physics , sound is a vibration that propagates as an acoustic wave , through a transmission medium such as a gas, liquid or solid. (wikipedia.org)
  • Baumgartner R. (2022) Evaluation of spatial tasks in virtual acoustic environments by means of modeling individual localization performances. (oeaw.ac.at)
  • Effects of acoustic intensity and spectrum on categorical sound source localization. (bvsalud.org)
  • Our recent experiments have demonstrated that the spatial selectivity of cortical neurons can sharpen dramatically when an animal is actively engaged in a sound-localization task compared to when it is idle. (uci.edu)
  • Fischer, BJ & Peña, JL 2017, ' Optimal nonlinear cue integration for sound localization ', Journal of Computational Neuroscience , vol. 42, no. 1, pp. 37-52. (elsevier.com)
  • Thomas D. Rossing, "Physics and Psychophysics of High‐Fidelity Sound Part III: The Components of a Sound‐Reproducing System: Amplifiers and Loudspeakers", TPT, Vol. 18, #6, Sept. 1980, p. 426. (uiowa.edu)
  • Thomas D. Rossing, "Physics and Psychophysics of High‐Fidelity Sound Part II: The Components of a Sound‐Reproducing System", TPT, Vol. 18, #4, Apr. (uiowa.edu)
  • W-095 Science of Sound - Bell Labs", DICK and RAE Physics Demo Notebook. (uiowa.edu)
  • However since today I feel I'm back in the saddle again and v1.48 of RF for iOS is almost ready now, including bug fixes, language localizations and physics handling in Tetpuz. (wordpress.com)
  • Majdak P. (2022) Towards a general probabilistic framework to predict human sound localization. (oeaw.ac.at)
  • Reijniers J. (2022) Ideal versus non-ideal observer models for sound localization. (oeaw.ac.at)
  • Middlebrooks, JC: Masking release by combined spatial and masker-fluctuation effects in the open sound field. (uci.edu)
  • Method and device for improving the audibility, localization and intelligibility of sounds, and comfort of communication devices worn on or in the ear. (cdc.gov)
  • Evaluation of within-subject performance differences for sound source localization in a horizontal plane. (bvsalud.org)
  • This paper introduces a low-cost indoor localization system using sound spectrum of light fingerprint. (atlantis-press.com)
  • Only sound spectrum of light fingerprint is adopted for the identification of the lighting device to reduce the memory size requirement for implementation in a low-cost MCU. (atlantis-press.com)
  • Acoustics is the interdisciplinary science that deals with the study of mechanical waves in gasses, liquids, and solids including vibration , sound, ultrasound, and infrasound. (wikipedia.org)
  • Duran Audio's Nick Screen leads this seminar introducing principals of room acoustics such as reflectivity, reverberation and inteligibility - looking at why two similar looking rooms can sound very different. (wildapricot.org)
  • Proceedings of the 12th International Audio Mostly Conference on Augmented and Participatory Sound and Music Experiences. (nottingham.ac.uk)
  • Figure 1 shows a listener with a sound source and its properties azimuth elevation and distance. (ringbuffer.org)
  • Congenital blindness was found to positively affect the ability of a diver to recognise the source of a sound in an underwater environment, and divers should perform sound localisation tests during training sessions. (semanticscholar.org)
  • Attend this webinar and learn the basics of sound intensity and how it can be used for sound power and sound source localization. (siemens.com)
  • The brain has an amazing ability to identify the source of sounds around you. (knowingneurons.com)
  • In order to optimize product sounds, it is necessary to know the exact point of origin of a sound source. (head-acoustics.com)
  • This paper presents a Bayesian extension of MUSIC-based sound source localization (SSL) and tracking method. (elsevier.com)
  • One of the draw- backs of existing SSL methods is the necessity of careful param- eter tunings, e.g., the sound source detection threshold depend- ing on the reverberation time and the number of sources. (elsevier.com)
  • Today I'm going to walk you through my experience trying to localize the source of a sound using Arduino. (42bots.com)
  • Whichever input is higher determines the source direction of the sound. (42bots.com)
  • On the practical side this proves to be not that useful as it requires a huge amount of sound isolation between the 2 microphones, or the sound source to be extremely close to one of the microphones in order to give a reliable reading. (42bots.com)
  • Also, what you get is normally a binary result "Left or Right" and I was looking for something a bit more precise, giving me an angle to the sound source. (42bots.com)
  • Knowing that just reading the output levels in 2 two microphones to determine direction would not be enough, my approach was to determine how long it took for the sound to reach each microphone, whichever sensor is triggered first defines the side (left/right) and the time difference or phase shift between the 2 microphones would allow me to triangulate the sound source… at least that was the theory. (42bots.com)
  • The proposed method was validated in experiments performed in an anechoic room, using a custom-made setup of two sensors built from digital MEMS microphones, for sound source placed at varying distance and angle from the sensors. (mostwiedzy.pl)
  • This study aimed to measure sound source localization performance in patients with congenital UCHL and contralateral normal hearing who received a new bone conduction implant. (bvsalud.org)
  • Sound source localization ability was highly variable among individual subjects, with RMS errors ranging from 21 to 40 degrees. (bvsalud.org)
  • The sound waves are generated by a sound source, such as the vibrating diaphragm of a stereo speaker. (wikipedia.org)
  • The sound source creates vibrations in the surrounding medium. (wikipedia.org)
  • As the source continues to vibrate the medium, the vibrations propagate away from the source at the speed of sound , thus forming the sound wave. (wikipedia.org)
  • Determining where a sound is coming from (localization) and identifying its source become more challenging. (medlineplus.gov)
  • Ability to determine the specific location of a sound source. (bvsalud.org)
  • Figure 1: Sound source with angles and distances to left and right ear. (ringbuffer.org)
  • A variety of examples in 19 different sections of sound phenomena. (uiowa.edu)
  • b) signal detection and localization first step toward providing appropriate protective under similar conditions (Abel et al. (cdc.gov)
  • Horizontal plane sound localization was compared in normal-hearing males with the ears unoccluded and fitted with Peltor H10A passive attenuation earmuffs, Racal Slimgard II communications muffs in active noise reduction (ANR) and talk-through-circuitry (TTC) modes and Nacre QUIETPRO TM communications earplugs in off (passive attenuation) and push-to-talk (PTT) modes. (who.int)
  • Horizontal plane localization performance in aided conditions showed statistically significant improvement compared with the unaided conditions, with RMS errors ranging from 17 to 27 degrees. (bvsalud.org)
  • Analysis revealed improved sound localization performance in a horizontal plane with the activated transcutaneous bone conduction implant. (bvsalud.org)
  • Having two ears enables normal-hearing listeners to navigate in noisy environments and locate sounds in the horizontal plane. (wisc.edu)
  • Results show that responses had a rightward bias and that speech was harder to localize than percussion sounds, which are results consistent with the literature. (aes.org)
  • Age-related hearing loss first affects the ability to hear high-frequency sounds, such as speech. (medlineplus.gov)
  • As the hearing loss worsens, it affects more frequencies of sound, making it difficult to hear more than just speech. (medlineplus.gov)
  • An Artificial Intelligence (AI), algorithm will be implemented in a low-cost Micro-Control Unit (MCU), to perform the localization function. (atlantis-press.com)
  • An algorithm for the robust localization of a vehicle using both displacement tracking and sound localization is proposed. (elsevier.com)
  • The two modalities are integrated by modeling the displacement tracking uncertainty by a Gaussian Mixture Model (GMM) and combining it with the probability distribution obtained from the sound localization system. (elsevier.com)
  • It is shown that the proposed integrated system results in an average localization error (at best 11cm) that is better than either modality alone. (elsevier.com)
  • @kildorf The map accordion system sounds like a good time-saver. (verge-rpg.com)
  • Only through a vast programme of agroecology, land redistribution and the re-localisation of food systems can we effectively build carbon back into the soils and cut emissions in the food system. (grain.org)
  • Due to these anatomical variations, endodontic treatment of a taurodontic element is a clinical challenge given the complexity of localization and instrumentation of the root canal system. (bvsalud.org)
  • Our brain continuously receives complex combinations of sounds originating from different sources and relating to different events in the external world. (elsevier.com)
  • How does the brain locate sound sources? (knowingneurons.com)
  • Human sound localization is an important computation performed by the brain. (njit.edu)
  • How does the brain compute sound localisation without the equations? (stackexchange.com)
  • where sound waves are converted to nerve impulses that are sent to the brain. (medlineplus.gov)
  • However, it can also be associated with nerve pathways that carry sound information in the brain or changes in the eardrum or in the small bones in the middle ear. (medlineplus.gov)
  • Because there is no explicit map of auditory space in the cortex, studies of sound localization may also provide much broader insight into the plasticity of complex neural representations that are not topographically organized. (ox.ac.uk)
  • Sound intensity is a measure of the noise per unit area. (siemens.com)
  • Sound intensity allows you to calculate the ISO sound power value. (siemens.com)
  • Background: Epidemiological baseline information on the prevalence and intensity of parasitic infections in a given locality is a prerequisite for development and evaluation of sound control strategies. (bvsalud.org)
  • Recent studies of sound localization have shown that adaptation and learning involve multiple mechanisms that operate at different timescales and stages of processing, with other sensory and motor-related inputs playing a key role. (ox.ac.uk)
  • Adaptation of sound localization induced by rotated visual feedback in reaching movements. (scirp.org)
  • Around 2,000 translation companies are known to be active in Korea within the localization industry. (musaistudio.com)
  • Some inexperienced direct clients might question the target text from a position of translation and localization ignorance: for instance, insisting that every word in a title is capitalized in a Russian target text, which is not the norm, or making corrections to a translation based on the logic "but I saw it on other photographers' websites written this way (albeit completely ungrammatical). (ata-divisions.org)
  • To appeal to the locals then great localisation and translation management is necessary to ensure that the text you're creating really hits the mark and converts into sales. (kathrynread.com)
  • Localisation goes further than mere translation - it involves really converting the content into a local form. (kathrynread.com)
  • But why spend all that money on localisation and translation management? (kathrynread.com)
  • If working in the translation and localisation industry had such a low barrier to entry, it wouldn't be a specialised degree course, offered by many illustrious universities. (kathrynread.com)
  • Why Work with a Professional from the Translation and Localisation Industry? (kathrynread.com)
  • Background: Hearing threshold and the ability to localize sound sources are reduced underwater. (semanticscholar.org)
  • Our contribution consists of (1) automatic parameter estimation in the variational Bayesian framework and (2) tracking of sound sources with reliability. (elsevier.com)
  • Experimental results demonstrate our method robustly tracks multiple sound sources in a reverberant environment with RT20 = 840 (ms). (elsevier.com)
  • The advantages of a whistle are that they can be loud enough to overpower other sound sources and can also provide a frequency that is easy to identify and be reproduced by a human. (42bots.com)
  • The aim of the work is to estimate the position of sound sources. (mostwiedzy.pl)
  • Possible application of the proposed method is estimation of the position of moving sound sources, such as road vehicles. (mostwiedzy.pl)
  • Patients with bilateral cochlear implants have access to sound in both ears but experience difficulties locating sound sources, particularly in noise. (wisc.edu)
  • Localization of multiple sound sources from a microphone array is a challenging task that has been a research topic for decades. (essays.se)
  • These signals are potentially important for localizing sound sources, attending to salient stimuli, distinguishing environmental from self-generated sounds, and perceiving and generating communication sounds. (nih.gov)
  • The underwater sound localization acuity of harbor seals (Phoca vitulina) was measured and it is suggested that the harbor seal can be regarded as a low-frequency specialist. (semanticscholar.org)
  • Results also show that it was harder to localize sound in a simulated room with a high ceiling despite having a higher direct-to-reverberant ratio than other simulated rooms. (aes.org)
  • The issue of where in the human cortex coding of sound location is represented still is a matter of debate. (researchgate.net)
  • B) Immunohistochemical localization of viral antigen in a frontal cortex biopsy specimen. (cdc.gov)
  • Here, behavioral experiments find that softer sounds are perceived closer to midline than louder sounds, favoring rate-coding models of human sound localization. (njit.edu)
  • On a typical project in our studio, we staff a producer, designer, an engineer, a visual interaction designer, a game artist (2D or 3D), quality assurance, and a sound engineer who doubles as our music composer. (filamentgames.com)
  • For example, sound moving through wind will have its speed of propagation increased by the speed of the wind if the sound and wind are moving in the same direction. (wikipedia.org)
  • Hypothesis: Underwater hearing acuity and sound localization are improved by the presence of an air interface around the pinnae and inside the external ear canals. (semanticscholar.org)
  • Studies have demonstrated that conventional hearing protectors interfere with sound localization. (who.int)
  • Sound Localization in Patients With Congenital Unilateral Conductive Hearing Loss With a Transcutaneous Bone Conduction Implant. (bvsalud.org)
  • Age-related hearing loss also causes safety issues if individuals become unable to hear smoke alarms, car horns, and other sounds that alert people to dangerous situations. (medlineplus.gov)
  • 1) Spatial Hearing: We are exploring the auditory cortical mechanisms that enable a listener to pick a sound out of a complex auditory scene on the basis of the sound's location. (uci.edu)
  • That's what the wind does on your hearing aid, even a light breeze can sound like a raging tornado on many hearing aids. (hearingaidknow.com)
  • This extra microphone in the M&RIE fixes that problem, meaning us hearing aid users again get the benefit of having radar-shaped ears to pick up sounds. (hearingaidknow.com)
  • Note that the particles of the medium do not travel with the sound wave. (wikipedia.org)
  • JQI researchers and colleagues have investigated mathematical models to see if dynamical localization can still arise when many quantum particles interact. (umd.edu)
  • Hypertaurodontism is the most severe form that presents bifurcation or trifurcation of the root apical third which hampers the localization and access to the canals 7-8 . (bvsalud.org)
  • This relationship, affected by temperature, determines the speed of sound within the medium. (wikipedia.org)
  • Medium viscosity determines the rate at which sound is attenuated. (wikipedia.org)
  • Posterior auditory regions also showed increased activity for high coherence, primarily when sound localization was required and subjects successfully localized sounds. (elsevier.com)
  • In this video, we measure the amount of sound created when using different types of linear bearings. (4students.online)
  • Sound waves above 20 kHz are known as ultrasound and are not audible to humans. (wikipedia.org)
  • The simple realization that sound is formed by waves of energy that can bounce or be channeled in different ways depending on the materials opens you up for a greater understanding of all the challenges involved. (42bots.com)
  • Microphones are nothing more than sensors (transducers) that will convert the sound waves into an electric signal. (42bots.com)
  • The time difference between the beginning of the waves in the 2 channels should allow for triangulation considering the speed of sound. (42bots.com)
  • In air at atmospheric pressure, these represent sound waves with wavelengths of 17 meters (56 ft) to 1.7 centimeters (0.67 in). (wikipedia.org)
  • Sound waves below 20 Hz are known as infrasound . (wikipedia.org)
  • Sound can propagate through a medium such as air, water and solids as longitudinal waves and also as a transverse wave in solids . (wikipedia.org)
  • This outcome is due to the current processing strategies in clinical devices which do not capture accurate timing of the sound arriving at the two ears. (wisc.edu)
  • Localization was assessed using an array of eight loudspeakers, two in each spatial quadrant. (who.int)
  • Some sounds are harder to distinguish and pitch is sort of messed up. (anausa.org)
  • localization performance quantified using the root mean square (RMS) error. (bvsalud.org)
  • BLON has been focusing on the sound quality and performance of its earphones, claiming that audiophiles all over the world can experience HIFI music. (ear-phone-review.com)
  • Highlight features include isolated power supply, Direct Function, and phono MM input, letting listeners enjoy crisp, clear sound close to the original performance. (pioneer-av.com)
  • The studies discussed here take a step toward providing unique strategies such that listeners with cochlear implants can detect the time-of-arrival of sounds and distinguish locations in noisy environments. (wisc.edu)
  • In contrast, the hemispheric-difference model encodes location through spike-rate and predicts that perceived direction becomes medially biased at low sound levels. (njit.edu)
  • GRAS Sound and Vibration is introducing two new products: GRAS 12BA and 12BB Microphone Power Modules aimed at engineers who need to power CCP measurement microphones and would like seamless integration of microphone sensitivity data via TEDS. (adamsengg.com)
  • The BLON MINI has relatively good mid to high frequencies, and can be expected to sound quite reliable in terms of localization. (ear-phone-review.com)
  • On-going research on the creation and experience of dynamic, object-based sound and music experiences that are site specific. (nottingham.ac.uk)
  • I had to develop several tools just to make sure everything always is synced correctly even though Android and iOS handles localizations differently. (wordpress.com)
  • Immunofluorescence and immunohistochemical analyses with human astrovirus Puget Sound capsid antibodies. (cdc.gov)
  • My whistle produces a sound wave around 1.6Khz and that can be pretty distinct from normal noise. (42bots.com)
  • This makes possible to identify the cause of disruptive sound components and rectify these effectively, optimize sound radiation and thereby achieve the desired sound experience. (head-acoustics.com)