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EarplugsDecibelNominalResonant frequenciesCharacteristicsVelocitiesSignalsCutoff frequencyBandwidthInversion recoveryMeasurementsRangeFiltersIntermodulation productsPropagation1000SoundHighRing modulation frequencyAttenuatorCalculationsAcousticPeakTypicallyBeamInsertion LossUltrasoundParameterConstantMeasurementTransmissionsTemperatureReductionProtectorsTransmissionVariesShapesResponseBandStudyAttenuatesDependenceHearing protectionRangesHigherLowerPerformanceDataOfferEffectsLiverWaveSystems
Earplugs1
  • Even though uniform attenuation earplugs (UAE) are available, many studies find that musicians, especially instructors, do not wear them. (cdc.gov)
Decibel1
  • In the filtering process, the program retrieved the signals magnitudes and applied different decibel attenuations at certain frequency bands. (dtic.mil)
Nominal1
Resonant frequencies2
  • First, each individual LC resonant circuit was assembled and its coil spacing adjusted to obtain the corresponding resonant frequencies of 650, 1320 and 1530 kHz. (qsl.net)
  • Additional background information on previous studies of loose roof rock vibrations in underground mines, analyses of expected low-order resonant frequencies of slabs with varying boundary conditions, and reviews of laser Doppler and full-field vibration techniques applied to large structures can be found in [2]. (cdc.gov)
Characteristics4
  • Room size, absorption characteristics - and attenuation in direct sound fields. (engineeringtoolbox.com)
  • The first IF frequency is 9 MHz, and a low noise figure dual gate MOS FET, D-quad DBM (Double Balanced Mixer) with excellent intermodulation characteristics, is implemented in the mixer section. (yaesu.com)
  • This means both a better link budget and better attenuation characteristics. (wi-fi.org)
  • Hearing protectors vary in their attenuation characteristics, with most providing a maximum of 20 to 35 decibels of noise reduction when worn correctly. (cdc.gov)
Velocities3
  • The primary project objectives are to relate seismic and acoustic velocities and attenuations to hydrate saturation and texture. (doe.gov)
  • The experiments comprise a series of petrophysical tests on laboratory-formed hydrate-bearing sediments, including frequency-dependent measurements of seismic velocities and attenuation. (doe.gov)
  • Note that propagation velocities varies with frequencies. (engineeringtoolbox.com)
Signals4
  • Ferrite beads are used as low pass filters to eliminate high frequency noise while allowing low frequency signals or DC current to pass through a circuit. (coilcraft.com)
  • A 5-pole Chebyshev low pass filter 2 that I had previously designed did not provide sufficient attenuation of strong medium wave broadcast signals below 1 MHz. (qsl.net)
  • The Narrow band SDR receiver removes strong out of band signals by using a superheterodyne method, with narrow band roofing filters which significantly attenuates unwanted out of band frequency components, and the wanted signals within the passband are converted to digital by a high resolution 18-bit A/D converter and sent to an FPGA (Field Programmable Gate Array) for signal processing. (yaesu.com)
  • Probes have different (sometimes switchable) attenuation ratios that change how the signals are fed into your oscilloscope. (electronicdesign.com)
Cutoff frequency1
  • The calculator will only return data for frequencies below the cutoff frequency of the cable. (timesmicrowave.com)
Bandwidth1
  • Many probes populate the T&M market-deciding on the best option requires a good understanding of bandwidth, attenuation ratio, and loading specs. (electronicdesign.com)
Inversion recovery1
  • Magnetic resonance imaging (MRI) of the brain may reveal subcortical white matter lesions (hyperintense on T2 and fluid attenuation inversion recovery [FLAIR], may be bilateral) along with involvement of thalamus, basal ganglia, and brainstem. (medscape.com)
Measurements2
  • In conclusion, measurements of ACs using a high-frequency convex transducer are feasible even in small children, with lower measurement variability. (elsevierpure.com)
  • Ninety-five percent of the final PAR measurements maintained the target attenuation of 15 dB. (cdc.gov)
Range9
  • Log-distance path loss model Radio propagation model Young model Propagation data and prediction methods for the planning of indoor radio communication systems and the radio local area networks in the frequency range 900 MHz to 100 GHz, ITU-R Recommendations, Geneva, 2001 Introduction to RF propagation, John S. Seybold, 2000, John Wiley and Sons. (wikipedia.org)
  • Propagation data and prediction methods for the planning of indoor radio communication systems and the radio local area networks in the frequency range 900 MHz to 100 GHz, ITU-R Recommendations, Geneva, 2001. (wikipedia.org)
  • Figures 5 and 7 shows the measured attenuation in decibels for each filter over the frequency range from 100 kHz to 10 MHz. (qsl.net)
  • Attenuation and power values are defined for each sub-range. (cisco.com)
  • Wi-Fi HaLow uses a sub-gigahertz (S1G) wireless radio operating in a frequency range between 750 MHz and 928 MHz. (wi-fi.org)
  • It should be symmetric with no significant difference in amplitudes on laterality, a posterior dominant rhythm (PDR) should be identifiable with a clear anterior to posterior gradient in admixtured frequencies, with faster frequencies anteriorly in the beta (13-17 Hz) range. (medscape.com)
  • Noise reduction is achieved over a wide frequency range, e.g. from 125 to 4000 Hz range. (cdc.gov)
  • it is important to remark that the noise reduction achieved in the low frequency range can complement the good noise reduction performance of other such as ear muffs. (cdc.gov)
  • Ideally, the dispersion profile should be recorded from It is demonstrated that the EMOR model, which was developed typical MRI frequencies of order 100 MHz down to the kHz in a companion paper to this study (see Halle, this issue), ac- range. (lu.se)
Filters4
  • All Distance Frequency Attenuation Filters must be configured in the base class CfgDistanceFilters . (bistudio.com)
  • Elliptical bandstop filters demonstrate frequency response with sharp maxima of attenuation at the specific frequencies of their resonant LC circuits. (qsl.net)
  • This construction technique may be adapted for filters on other frequency ranges. (qsl.net)
  • It is demonstrated that this gives much improved skirt selectivity in the case of a finite frequency pole, making it a viable intermediate case between the Chebyshev and elliptic-function filters. (harvard.edu)
Intermodulation products2
  • This design appeared to offer a feasible solution to achieve the required attenuation to suppress receiver overload and interfering intermodulation products. (qsl.net)
  • The SKY12408-321LF is particularly suited for 100 Ω differential systems for which high attenuation accuracy, low insertion loss, and low intermodulation products are required. (skyworksinc.com)
Propagation1
  • The ITU indoor propagation model, also known as ITU model for indoor attenuation, is a radio propagation model that estimates the path loss inside a room or a closed area inside a building delimited by walls of any form. (wikipedia.org)
10001
  • Having a higher attenuation ratio (100:1, 1000:1) will allow you to look at higher voltages, but it will also make the scope's internal amplifier noise more pronounced. (electronicdesign.com)
Sound18
  • Noise is usually defined as unwanted sound - noise, noise generation, silencers and attenuation in HVAC systems. (engineeringtoolbox.com)
  • Sound attenuation vs. change in duct size. (engineeringtoolbox.com)
  • Chamber sound attenuation. (engineeringtoolbox.com)
  • Sound attenuation vs. frequency in rotating heat exchangers. (engineeringtoolbox.com)
  • Attenuation of sound in seawater vs. temperature and frequency. (engineeringtoolbox.com)
  • The speed and attenuation of sound in moist air varies with sound frequency and air humidity. (engineeringtoolbox.com)
  • The attenuation in a room depends on the location of the sound source and the receiver - and the room constant. (engineeringtoolbox.com)
  • An introduction to the nature of sound with frequencies, wave-lengths and octaves. (engineeringtoolbox.com)
  • Estimating sound attenuation where ducts splits to terminals. (engineeringtoolbox.com)
  • Sound transmission and attenuation in building elements like massive concrete walls or floors. (engineeringtoolbox.com)
  • The disruption of the sound pressure wave and the reduction of noise is called attenuation - Sound Pressure Level vs. distance calculator. (engineeringtoolbox.com)
  • Every sound in the game is attenuated by a frequency Low Pass Filter, the frequency cutoff changes with distance. (bistudio.com)
  • Sound Effects is an older Arma 3 audio feature which handles sound filtering of a specific group of sounds, like radio protocol, underwater, or interior attenuation. (bistudio.com)
  • This thesis explores the possibility of estimating distance from a sound source using the attenuations regarding different frequencies over a distance. (uppsatser.se)
  • Once a UAS sound file was loaded, the program read it as signal data and displayed graphs of its magnitudes with respect to time and frequency. (dtic.mil)
  • Sound waves can be categorised in three frequencies: high, middle and low frequencies. (musicworks.co.nz)
  • Protectors suitable for noisy environments are generally rated to provide at least 20 decibels of attenuation so they should completely block a sound that's just 15 decibels over the user's hearing threshold. (cdc.gov)
  • Individual 8 h A-weighted equiva-lent sound levels (LAeq,8h), earplug personal attenuation ratings (PARs), and pure-tone audiometric tests were performed. (cdc.gov)
High8
  • We evaluated the measurement feasibility and diagnostic ability of an ultrasound-guided attenuation parameter (UGAP) using a high-frequency convex transducer in children. (elsevierpure.com)
  • High frequency hearing loss can reduce the sensitivity to high rates of temporal modulation in an auditory signal, probably because of inaudible high frequencies. (hearingreview.com)
  • Audibility in the high frequencies is now a realistic goal due to the availability of hearing aids with wider frequency spectrum and active feedback cancellation techniques. (hearingreview.com)
  • It essentially describes how high of a frequency the probe is able to pass on to the oscilloscope. (electronicdesign.com)
  • By designing a high-frequency amplifier into the probe head, the probe cable and oscilloscope front end are isolated from your DUT. (electronicdesign.com)
  • Low-Intensity Pulsed Ultrasound (LIPUS) is a form of mechanical energy transmitted transcutaneously by high-frequency acoustic pressure waves. (bvsalud.org)
  • IE uses a low-amplitude, high-frequency source (often a spring-loaded or solenoid-driven ball bearing) to obtain a frequency-domain measure of the compression wave's travel time between the outer surface and internal planar discontinuities or external boundaries that exhibit an acoustic impedance mismatch. (cdc.gov)
  • These studies were restricted composition, pH, or temperature in a controlled way while to relatively high frequencies ( 2 MHz) and could there- maintaining the integrity of the tissue. (lu.se)
Ring modulation frequency1
  • The tremolo rate and ring modulation frequency can be controlled with MIDI CC message and an expression pedal. (zzounds.com)
Attenuator2
  • MECA's 605-20-1 radio frequency coaxial attenuator. (tessco.com)
  • The differential attenuator paths are controlled together and can be in either an insertion loss or a 6 dB attenuation state. (skyworksinc.com)
Calculations1
  • The scope will read the probe's attenuation ratio and display the correct signal values on the screen so that you needn't do the calculations in your head. (electronicdesign.com)
Acoustic3
  • The goals of this study were to investigate the measure of attenuation of hearing protection devices HPDs and to develop a filter that uses parameters of HPDs to alter acoustic signatures of Unmanned Aircraft Systems UASs. (dtic.mil)
  • As ultrasound propagates through a material, a reflected radio -frequency (RF) signal is generated when encountering a mismatch in acoustic impedance . (bvsalud.org)
  • The LIPUS device produces a 200 µs burst of 1.5 MHz acoustic sine waves, that repeats at a modulation frequency of 1 kHz and provides a peak pressure of 30 mW/cm2. (bvsalud.org)
Peak1
  • 5 I started with an elliptical bandstop filter design by Kratoska 6 and varied the inductor values to provide resonances and peak attenuation on 650, 1320 and 1530 kHz. (qsl.net)
Typically1
  • Lower attenuation probes typically have much higher loading on your system, which brings us to the next probe characteristic to consider. (electronicdesign.com)
Beam2
  • The following information was recorded on a standard paper collection form: 1) the presence of liver-to-kidney contrast 2) the degree of the brightness of the liver parenchyma, 3) the presence of deep beam attenuation, 4) the presence of echogenic walls in the small intrahepatic vessels, and 5) the definition of the gallbladder walls. (cdc.gov)
  • Two of the most frequently used methods are based on measuring the attenuation of a beam of electromagnetic radiation or ultrasound when it passes through the bone. (medscape.com)
Insertion Loss1
  • In the case of real-frequency zeros, very flat group delay over 50 percent of the passband is achieved with minimal cost in insertion loss and skirt rejection. (harvard.edu)
Ultrasound1
  • Attenuation of orthodontically induced inflammatory root resorption by using low-intensity pulsed ultrasound as a therapeutic modality- a systematic review. (bvsalud.org)
Parameter1
  • Default filter is configured in CfgSoundGlobals , however it is possible to define a custom distance attenuation filter for each SoundSet using parameter distanceFilter . (bistudio.com)
Constant2
  • Attenuation constant increases by increasing the wave frequency and it shows higher values at higher T/T c . (scirp.org)
  • Attenuation of neurologic, ophthalmologic, and cardiac symptoms requires constant adherence to a suitable diet and plasmapheresis. (medscape.com)
Measurement2
  • Actual values may vary based on manufacturing tolerances, cable assembly length, connector performance, actual operating frequency, and measurement accuracy. (timesmicrowave.com)
  • Spaceborne precipitation radars, including the Tropical Rainfall Measuring Mission's Precipitation Radar (PR) and the Global Precipitation Measurement Mission's Dual-Frequency Precipitation Radar (DPR), measure not only precipitation echoes but surface echoes as well, the latter of which are used to estimate the path-integrated attenuation (PIA) in the surface reference technique (SRT). (ametsoc.org)
Transmissions2
  • Monitoring non-directional beacons (NDBs) and other transmissions on frequencies below 530 kHz may be difficult in urban locations due to the overloading of the receiver front end by nearby powerful AM broadcast transmitters in the 530-1700 kHz medium frequency band. (qsl.net)
  • Wi-Fi HaLow transmits farther and passes through materials better than higher frequency wireless transmissions. (wi-fi.org)
Temperature1
  • I also illustrated the dependence of the TE and TM wave attenuation on the wave frequency and the reduced temperature of the superconducting wall (T/T c ). (scirp.org)
Reduction2
  • Maximum reduction occurs in the 1250 Hz band with and attenuation of 6 dB. (cdc.gov)
  • The deduced electric quadrupole moments for the ground-state band are consistent with a very slow reduction with frequency with values ranging between 2.4(3) and 2.0(1)e b. (lu.se)
Protectors2
  • Using just a single test frequency saves time and serves the purpose of checking for adequate fit since well-fit hearing protectors will have good attenuation on all frequencies. (cdc.gov)
  • A future enhancement of this approach will be to provide a sequence of MP3 "tracks" that vary by 5 decibels to allow users to assess approximately how much attenuation they are getting from their hearing protectors. (cdc.gov)
Transmission3
  • f = Frequency of transmission. (wikipedia.org)
  • Transmission frequency: Max. (pssl.com)
  • A unified theory is presented for the synthesis of exactly equiripple low-pass prototypes having one simple pole of attenuation at a real frequency or a single pair of real-axis transmission zeros (giving linear-phase performance). (harvard.edu)
Varies1
  • The Blade Pass Frequency noise generated by a fan can be very intense and varies with the number of blades and the rotation velocity. (engineeringtoolbox.com)
Shapes2
  • The complete GAMMASPHERE and MICROBALL arrays were used to obtain clean γ- γ- γ line shapes to be analyzed by the Doppler shift attenuation method and to determine 27 lifetimes in the ground-state band and in two excited bands. (lu.se)
  • Determination of this global response through identification of the structure's natural frequencies, mode shapes, and damping forms the basis of experimental modal analysis [5]. (cdc.gov)
Response1
  • hammer) that stimulates more of a low-frequency global deformation response. (cdc.gov)
Band2
  • The information collected will be a unique dataset in that seismic attenuation will be acquired within the seismic frequency band. (doe.gov)
  • A dual-frequency rain detection technique developed for the Ku- and C-band TOPEX altimeter, is adapted for the Ku- and S-band RA-2 altimeter on Envisat. (nerc.ac.uk)
Study2
  • Then, each filter circuit was then assembled and tested with a miniVNA Pro vector network analyzer and signal strengths measured with a Flex-3000 receiver tuned to the frequencies under study. (qsl.net)
  • This study aimed to evaluate changes in attenuation over time for properly fit devices when worn by workers exposed to hazardous noise. (cdc.gov)
Attenuates1
  • It is possible for a sub-harmonic variant of the normal alpha rhythm to be present at exactly half the frequency of the normal PDR, which usually has a notched appearance and attenuates with eye opening. (medscape.com)
Dependence1
  • The water-1H MRD profiles reported here cover counts for the dependence of the water-1H spin-lattice relax- more than four frequency decades. (lu.se)
Hearing protection1
  • The NIOSH QuickFitWeb helps you determine if your hearing protection is giving you at least 15 decibels of attenuation by comparing two "threshold" tests-one without hearing protection and one with the devices on or in your ears. (cdc.gov)
Ranges1
  • The frequency ranges from 191'350 Ghz (1566 .72 nm) to 196'100 Ghz (1528 .77 nm). (cisco.com)
Higher2
Lower2
  • The lower the frequency, the less path loss, the farther the signal travels. (wi-fi.org)
  • LHM-superconductor waveguide shows lower wave attenuation than LHM-metal waveguide. (scirp.org)
Performance1
  • Superior attenuation and frequency performance enable smaller solution sizes compared to traditional thick-film chip ferrite beads. (coilcraft.com)
Data2
  • Finally, available field data, such as sonic well logs, will be inverted for attenuation as a function of frequency. (doe.gov)
  • The obtained attenuation data will be used in conjunction with velocity information and developed rock physics models to investigate targeted gas hydrate-bearing areas, specifically with respect to their potential formation history. (doe.gov)
Offer1
  • HPD designed to have a uniform attenuation across frequencies may offer protection for musicians without distorting sounds they need to hear clearly. (cdc.gov)
Effects3
  • Physiological effects from low-frequency noise or vibrations. (engineeringtoolbox.com)
  • All attenuation effects have to be configured within class AttenuationsEffects (base class CfgSoundEffects ). (bistudio.com)
  • Capacitive effects are generally the most difficult to work with and are extremely responsive to frequency. (electronicdesign.com)
Liver1
  • Attenuation coefficients (ACs) of the liver were measured using both 1- to 6-MHz (AC1-6) and 2- to 9-MHz (AC2-9) probes of the LOGIQ E10 system (GE Healthcare). (elsevierpure.com)
Wave3
  • This paper tackles the wave attenuation along with a cylindrical waveguides composed of a left Handed material (LHM), surrounded by a superconducting or metal wall. (scirp.org)
  • Lowest wave attenuation and the best confinement are achieved for the thickest TE waveguide. (scirp.org)
  • H. Mousa, "Attenuation in a Cylindrical Left Handed Material (LHM) Wave-Guide Structure," Optics and Photonics Journal , Vol. 2 No. 1, 2012, pp. 46-53. (scirp.org)
Systems1
  • Ethernet connection for Wireless Systems Manager (WSM) control software included for advanced frequency coordination in multi-channel setups. (pssl.com)