Ultrasonography, PrenatalSoundPregnancyPregnancy Trimester, SecondFetal DevelopmentGestational AgeBiometryFetal DiseasesPrenatal DiagnosisSound LocalizationInfant, NewbornHeart SoundsUltrasonographyUltrasonicsSound SpectrographyUltrasonic TherapyHigh-Intensity Focused Ultrasound AblationAcoustic StimulationUltrasonography, InterventionalMicrobubblesAcousticsAuditory PerceptionTransducersHearingAuditory PathwaysAuditory CortexUltrasonography, DopplerNoiseUltrasonography, Doppler, ColorEvoked Potentials, AuditoryMicroscopy, AcousticPsychoacousticsSensitivity and SpecificityReproducibility of ResultsRespiratory SoundsAuditory ThresholdHeart AuscultationAuscultationImaging, Three-DimensionalContrast MediaEndosonographyVocalization, AnimalEchoencephalographyAnimal CommunicationProspective StudiesPhonocardiographySonicationUltrasonography, MammaryMusicCalcaneusInferior ColliculiTime FactorsPhantoms, ImagingSpeech PerceptionElasticity Imaging TechniquesEquipment DesignEcholocationFluorocarbonsUltrasonography, Doppler, DuplexPredictive Value of TestsSulfur HexafluoridePhoneticsPitch PerceptionImage Interpretation, Computer-AssistedUltrasonography, Doppler, PulsedBlood Flow VelocityObserver VariationPhonophoresisAir SacsUltrasound, High-Intensity Focused, TransrectalSignal Processing, Computer-AssistedLoudness PerceptionCochlear NerveHigh-Energy Shock WavesImage Processing, Computer-AssistedPattern Recognition, PhysiologicalSpeechEarImage EnhancementPregnancy Trimester, FirstStethoscopesFeasibility StudiesTympanic MembranePalpationPitch DiscriminationTreatment OutcomeTomography, X-Ray ComputedEvoked Potentials, Auditory, Brain StemVibrationCochleaRetrospective StudiesCoronary VesselsChiropteraTinnitusStrigiformesReaction TimePressurePregnancy Trimester, ThirdAlgorithmsCarotid Arteries