Glossary: A

"A Change Is Gonna Come" is a song by the American singer-songwriter Sam Cooke. It initially appeared on Cooke's album Ain't That Good…

A Child's Christmas in Wales is a piece of prose written by the Welsh poet Dylan Thomas and recorded by Thomas in 1952.

A major is a major scale based on A, with the pitches A, B, C♯, D, E, F♯, and G♯. Its key signature has three sharps. Its relative minor…

A minor is a minor scale based on A, B, C, D, E, F, and G. Its key signature has no flats or sharps. Its relative major is C major and its…

A Prairie Home Companion was a weekly radio variety show created and hosted by Garrison Keillor that aired live from 1974 to 2016. In…

A Sound Garden is an outdoor public art work in Seattle, Washington, United States. It is one of six such works on the National Oceanic…

A-flat major is a major scale based on A♭, with the pitches A♭, B♭, C, D♭, E♭, F, and G. Its key signature has four flats.

A-flat minor is a minor scale based on A-flat, consisting of the pitches A-flat, B-flat, C-flat, D-flat, E-flat, F-flat, and G-flat. Its…

A-sharp minor is a minor musical scale based on A♯, consisting of the pitches A♯, B♯, C♯, D♯, E♯, F♯, and G♯. Its key signature has seven…

The A-side and B-side are the two sides of vinyl records and cassettes, and the terms have often been printed on the labels of two-sided…

A-weighting is a form of frequency weighting and the most commonly used of a family of curves defined in the International standard IEC…

Augustus John Turner (October 12, 1818 – May 14, 1905), known as "A. J. Turner", was an American composer, band leader and music professor.

An A/B sound system is a type of sound reinforcement system or public address system. Unlike a more typical sound reinforcement system, an…

A440 (also known as Stuttgart pitch) is the musical pitch corresponding to an audio frequency of 440 Hz, which serves as a tuning standard…

Abruzzo–Erickson syndrome is an extremely rare disorder characterized by deafness, protruding ears, coloboma, a cleft palate or palatal…

Absolute pitch (AP), often called perfect pitch, is the ability to identify or re-create a given pitch without the benefit of a reference…

The absolute threshold of hearing (ATH), also known as the absolute hearing threshold or auditory threshold, is the minimum sound level of…

In acoustics, absorption refers to the process by which a material, structure, or object takes in sound energy when sound waves are…

The Academy Color Encoding System (ACES) is a color image encoding system created under the auspices of the Academy of Motion Picture Arts…

An acetate disc (also known as a lacquer, test acetate, dubplate, or transcription disc) is a type of phonograph record generally used…

Acoustic admittance is the measure of the flow of acoustic energy. It is measured in cubic meters per second (m3/s), per pascal (Pa). By…

A specific branch of contrast-enhanced ultrasound, acoustic angiography is a minimally invasive and non-ionizing medical imaging technique…

In acoustics, the acoustic approximation is a fundamental principle that states that an acoustic wave is created by a small, adiabatic…

In acoustics, acoustic attenuation is a measure of the energy loss of sound propagation through an acoustic transmission medium. Most…

Acoustic black hole effect is a physical phenomenon describing a large increase in damping of flexural vibrations in plates of variable…

An acoustic camera (or noise camera) is an imaging device used to locate sound sources and to characterize them. It consists of a group of…

In acoustical engineering, an acoustic circulator is a non-reciprocal three-port device that couples airborne sound waves only to an…

Acoustic cleaning is a maintenance method used in material-handling and storage systems that handle bulk granular or particulate…

In acoustics, the acoustic contrast factor is a number that describes the relationship between the densities and the sound velocities of…

Acoustic cryptanalysis is a type of side-channel attack that exploits sounds emitted by computers or other devices.

Acoustic data transmission, also known as data over sound, is a method for transmitting digital information using acoustic signals, i.e…

In acoustics, acoustic dispersion is the phenomenon of a sound wave separating into its component frequencies as it passes through a…

An acoustic doppler current profiler (ADCP) is a hydroacoustic current meter similar to a sonar, used to measure water current velocities…

Acoustic droplet ejection (ADE) uses a pulse of ultrasound to move low volumes of fluids (typically nanoliters or picoliters) without any…

Acoustic ecology, sometimes called ecoacoustics or soundscape studies, is a discipline studying the relationship, mediated through sound…

Acoustic emission (AE) is the phenomenon of radiation of acoustic (elastic) waves in solids that occurs when a material undergoes…

Acoustic enhancement is a subtle type of sound reinforcement system used to augment direct, reflected, or reverberant sound.

An acoustic fingerprint is a condensed digital summary, a digital fingerprint, deterministically generated from an audio signal, that can…

Acoustic foam is an open-celled foam used for acoustic treatment. It attenuates airborne sound-waves, reducing their amplitude, for the…

Acoustic harassment and acoustic deterrents are technologies used to keep animals and in some cases humans away from an area.

Acoustic holography is a technique that allows three-dimensional distributions of sound waves called sound fields to be stored and…

Acoustic impedance and specific acoustic impedance are measures of the opposition that a system presents to the acoustic flow resulting…

An acoustic interferometer is an instrument that uses interferometry to measure the physical characteristics of sound waves in a gas or…

An acoustic jar, also known by the Greek name echea (ηχεία, literally echoers), or sounding vases, are ceramic vessels found set into the…

Acoustic levitation is a method for suspending matter in air against gravity using acoustic radiation pressure from high intensity sound…

Acoustic lobing refers to the radiation pattern of a combination of two or more loudspeaker drivers at a certain frequency, as seen…

Acoustic location is a method of determining the position of an object or sound source by using sound waves. Location can take place in…

Acoustic lubrication or sonic lubrication occurs when sound (measurable in a vacuum by placing a microphone on one element of the sliding…

Acoustic membranes are elastic membranes used to produce, transmit or regulate sound. In musical instruments such as drums, it is the…

Acoustic metamaterials, sometimes referred to as sonic or phononic crystals, are architected materials designed to manipulate sound waves…

In acoustics and fluid dynamics, an acoustic metric (also known as a sonic metric) is a metric that describes the signal-carrying…

An acoustic mirror is a passive device used to reflect and focus (concentrate) sound waves. Parabolic acoustic mirrors are widely used in…

Acoustic panels (also sound absorption panels, soundproof panels or sound panels) are sound-absorbing fabric-wrapped boards designed to…

Acoustic plaster is plaster which contains fibres or aggregate so that it absorbs sound. Early plasters contained asbestos, but newer ones…

Acoustic quieting is the process of making machinery quieter by damping vibrations to prevent them from reaching an observer. Machinery…

Acoustic radiation force (ARF) is a physical phenomenon resulting from the interaction of an acoustic wave with an obstacle placed along…

Acoustic radiation pressure is the apparent pressure difference between the average pressure at a surface moving with the displacement of…

An acoustic radiometer is a device designed to measure acoustic radiation, and thus several other properties of sound, such as sound…

The acoustic reflex (also known as the stapedius reflex, stapedial reflex, auditory reflex, middle-ear-muscle reflex (MEM reflex, MEMR)…

Acoustic resonance is a phenomenon in which an acoustic system responds strongly to sound waves whose frequency matches one of its own…

Acoustic resonance spectroscopy (ARS) is a method of spectroscopy in the acoustic region, primarily the sonic and ultrasonic regions. ARS…

Acoustic resonance technology (ART) is an acoustic inspection technology developed by Det Norske Veritas over the past 20 years.

Acoustic seabed classification is the partitioning of a seabed acoustic image into discrete physical entities or classes.

Acoustic shock is the set of symptoms a person may experience after hearing an unexpected, loud sound. The loud sound, called an acoustic…

An acoustic short circuit is a phenomenon in which sound waves interfere in such a way that both waves are canceled out.

The term acoustic signature is used to describe a combination of acoustic emissions of sound emitters, such as those of ships and…

Acoustic streaming is a steady flow in a fluid driven by the absorption of high-amplitude acoustic oscillations. This phenomenon can be…

Acoustic suspension is a loudspeaker cabinet design that uses one or more loudspeaker drivers mounted in a sealed box.

Acoustic tags, also known as acoustic transmitters, are small sound-emitting devices that allow the detection and/or remote tracking of…

Acoustic theory is a scientific field that relates to the description of sound waves. It derives from fluid dynamics. See acoustics for…

An acoustic transmission line is the use of a long duct, which acts as an acoustic waveguide and is used to produce or transmit sound in…

Acoustic trauma is the sustainment of an injury to the eardrum as a result of a very loud noise. Its scope usually covers loud noises with…

Acoustic tweezers (also known as acoustical tweezers) are a set of tools that use sound waves to manipulate the position and movement of…

Acoustic waves are types of mechanical waves that propagate through matter—such as gas, liquid, and/or solids—by causing the particles of…

In physics, the acoustic wave equation is a second-order partial differential equation that governs the propagation of acoustic waves…

Acoustical engineering (also known as acoustic engineering) is the branch of engineering dealing with sound and vibration. It includes the…

Acoustical intelligence (ACOUSTINT, sometimes ACINT) is an intelligence gathering discipline that collects and processes acoustic…

Analysis of sound and acoustics plays a role in such engineering tasks as product design, production test, machine performance, and…

The Acoustical Society of America (abbreviated ASA) is an international scientific society founded in 1929 dedicated to generating…

Acoustics is a branch of continuum mechanics that deals with the study of mechanical waves in gases, liquids, and solids including topics…

AcoustID is a webservice for the identification of music recordings based on the Chromaprint acoustic fingerprint algorithm. It can…

Acousto-electric effect is a nonlinear phenomenon of generation of electric current in a piezo-electric semiconductor by a propagating…

Acousto-electronics (also spelled 'Acoustoelectronics') is a branch of physics, acoustics and electronics that studies interactions of…

An acousto-optic deflector (AOD) is a device that uses the interaction between sound waves and light waves to deflect or redirect a laser…

The acoustoelastic effect is how the sound velocities (both longitudinal and shear wave velocities) of an elastic material change if…

Active bass trap is a type of bass trap that uses electronic sensing and actuation to reduce low-frequency sound energy and room mode…

Active Bat is a low-power, Wireless indoor location system accurate up to 3 cm. It is based on a principle of trilateration, and relies on…

Active listening is the act of intentionally engaging with communication. Speakers receive confirmation that their point is coming across…

Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted…

Active sound design is an acoustic technology concept used in automotive vehicles to alter or enhance the sound inside and outside of the…

Adagio for Strings is a work by Samuel Barber arranged for string orchestra from the second movement of his String Quartet, Op. 11.

In magnetic tape recording, adaptive biasing is the technique of continuously varying the bias current to a recording head in accordance…

Adaptive feedback cancellation is a common method of cancelling audio feedback in a variety of electro-acoustic systems such as digital…

Adaptive noise cancelling is a signal processing technique for suppressing interference corrupting a received signal where the…

Alesis Digital Audio Tape, commonly referred to as ADAT, is a magnetic tape format used for the recording of eight digital audio tracks…

Additive synthesis is a sound synthesis technique that creates timbre by adding sine waves together.

Acoustic analogies are applied mostly in numerical aeroacoustics to reduce aeroacoustic sound sources to simple emitter types. They are…

Aeroacoustics is a branch of acoustics that studies noise generation via either turbulent fluid motion or aerodynamic forces interacting…

The AES11 standard published by the Audio Engineering Society provides a systematic approach to the synchronization of digital audio…

AES3 is a standard for the exchange of digital audio signals between professional audio devices. An AES3 signal can carry two channels of…

AES31 is a standard developed by the Audio Engineering Society for the interchange of digital audio projects between different systems.

AES47 is a standard which describes a method for transporting AES3 professional digital audio streams over Asynchronous Transfer Mode…

AES51 is a standard first published by the Audio Engineering Society in June 2006 that specifies a method of carrying Asynchronous…

The AES coarse-groove calibration discs (AES-S001-064) are a boxed set of two identical discs, one for routine use, one for master…

AES67 is a technical standard for audio over IP and audio over Ethernet (AoE) interoperability. The standard was developed by the Audio…

"Ain't No Sunshine" is a song by American singer and songwriter Bill Withers, from his 1971 debut album Just As I Am. The song was…

Aircraft noise pollution refers to noise produced by aircraft in flight that has been associated with several negative stress-mediated…

The Akai Professional AR900 is a stereo 16-bit MIDI digital reverb, that could also be controlled by the optional AR900T remote control. …

Akinetic mutism is a medical condition in which patients tend to neither move (akinesia) nor speak (mutism). It is the most severe…

Akoustolith is a porous ceramic material resembling stone. Akoustolith was a patented product of a collaboration between Rafael Guastavino…

An album is a collection of audio recordings (e.g., music) issued on a medium such as compact disc (CD), vinyl (record), or audio tape…

The album era (sometimes, album-rock era) was a period in popular music, usually defined as the mid-1960s decade through the mid-2000s…

Alcohol, sometimes referred to by the chemical name ethanol, is the active ingredient in alcoholic drinks such as beer, wine, and…

Aliquot stringing is the use of extra, un-struck strings in a piano for the purpose of enriching the tone. Aliquot systems use an…

"All I Want for Christmas Is You" is a song by American singer-songwriter Mariah Carey from her fourth studio album and first holiday…

All Things Considered (ATC) is the flagship news program produced by National Public Radio (NPR). It was the first news program on NPR…

The All-Night Vigil (Pre-reform Russian: Всенощное бдѣніе, Vsénoshchnoye bdéniye; Modern Russian: Всенощное бдение) is an a cappella…

In music, the all-trichord hexachord is a unique hexachord that contains all twelve trichords, or from which all twelve possible trichords…

In mathematics, an almost periodic function is, loosely speaking, a function of a real variable that is periodic to within any desired…

Alnico is a family of iron alloys which, in addition to iron, are composed primarily of aluminium (Al), nickel (Ni), and cobalt (Co)…

Alport syndrome is a rare genetic disorder, characterized by glomerulonephritis, end-stage kidney disease, and hearing loss.

Also sprach Zarathustra, Op. 30 is a tone poem by the German composer Richard Strauss, written in 1896 and inspired by Friedrich…

In the field of audio recording, an aluminum disc (aluminium in the UK and elsewhere) is a phonograph (gramophone in the UK) record made…

AMAX is a certification program for AM radio broadcasting standards, created in the United States beginning in 1991 by the Electronic…

"Amazing Grace" is a Christian hymn published in 1779 by the English clergyman John Newton. With a message that forgiveness and redemption…

Amazon Echo, often shortened to Echo, is a brand of smart speakers developed by Amazon. Echo devices connect to the voice-controlled…

Amazon Echo Show is a smart speaker with a screen that is part of the Amazon Echo line of products. Similarly to other devices in the…

In filmmaking, ambience (also known as atmosphere, atmos, or background) consists of the sounds of a given location or space. It is the…

In atmospheric sounding and noise pollution, ambient noise level (sometimes called background noise level, reference sound level, or room…

Ambiophonics is a method in the public domain that employs digital signal processing (DSP) and two loudspeakers directly in front of the…

Data exchange formats for Ambisonics have undergone radical changes since the early days of four-track magnetic tape. Researchers working…

The design of speaker systems for Ambisonic playback is governed by several constraints:

Ambisonic UHJ format is a development of the Ambisonic surround sound system designed to be compatible with mono and stereo media.

Ambisonics is a full-sphere surround sound format created by a group of English researchers — among them Michael A. Gerzon, Peter Barnes…

In medieval music, ambitus is a Latin term literally meaning enclos[ur]e, and in Medieval Latin means the "range" of a melodic line, most…

Amblyaudia (amblyos- blunt; audia-hearing) is a term coined by Dr. Deborah Moncrieff to characterize a specific pattern of performance…

The Amen break is a drum break that has been widely sampled in popular music. It comes from the 1969 instrumental track "Amen, Brother" by…

America's Town Meeting of the Air is a public affairs discussion broadcast on radio and television from May 30, 1935, to July 1, 1956…

The American Cochlear Implant Alliance (ACI Alliance) is a 501(c)(3) nonprofit organization that works to increase access to cochlear…

"American Pie" is a song by the American singer and songwriter Don McLean. It was a commercial success and cultural touchstone, notable…

The Portaflex is a line of amplifiers for electric guitars and bass guitars created by Ampeg and originally designed by Jess Oliver…

The Ampeg SVT is a bass guitar amplifier designed by Bill Hughes and Roger Cox for Ampeg and introduced in 1969. The SVT is a stand-alone…

The Ampex 601 was a portable, analog, reel-to-reel tape recorder produced by The Ampex Corporation from the mid-1950s through the 1960s. …

The Ampex ATR-100 is a multitrack tape recorder, designed by Ampex Corporation, of Redwood City, California, United States. It was…

Amplifier modeling is the use of solid state or digital signal processing technology to emulate the sound and functionality of…

AmpliFIND is an acoustic fingerprinting service and a software development kit developed by the US company MusicIP.

The amplitude of a periodic variable is a measure of its change in a single period (such as time or spatial period). The amplitude of a…

Amplitude panning is a technique in sound engineering where the same sound signal is applied to a number of loudspeakers in different…

Amusia, also called being tone-deaf, is a musical disorder that appears mainly as a defect in processing pitch but also encompasses…

The AN/SQS-504 Diver was an early naval medium-frequency active variable depth sonar (VDS) developed in Canada.

An analog ear or analog cochlea is a model of the ear or of the cochlea (in the inner ear) based on an electrical, electronic or…

The Ancient Greek accent was a melodic or pitch accent.

And God Created Great Whales, Op. 229, No. 1, is a symphonic poem for orchestra and recorded whale sounds by the American composer Alan…

An anechoic chamber (an-echoic meaning "non-reflective" or "without echoes") is a room designed to stop reflections or echoes of either…

In physics, angular frequency (symbol ω), also called angular speed and angular rate, is a scalar measure of the angle rate (the angle per…

The angular spectrum method is a technique for modeling the propagation of a wave field. This technique involves expanding a complex wave…

Musicology commonly classifies scales as either hemitonic or anhemitonic. Hemitonic scales contain one or more semitones, while…

Echolocation, also called bio sonar, is a biological active sonar used by several animal groups, both in the air and underwater…

The anti-exhaustion hypothesis is a possible explanation for the existence of large repertoires and the song switching behaviour exhibited…

The antihelix (anthelix) is a part of the visible ear; the pinna.

Appalachian Spring is an American ballet created by the choreographer Martha Graham and the composer Aaron Copland, later arranged as an…

Apparent source width (ASW) refers to the perceived spatial extent of a sound source. This psychoacoustic phenomenon is influenced by both…

Appreciative listening is a type of listening behavior where the listener seeks certain information which they will appreciate, and meet…

The modern Arab tone system, or system of musical tuning, is based upon the theoretical division of the octave into twenty-four equal…

Arch Oboler's Plays is a radio anthology series written, produced and directed by Arch Oboler. Minus a sponsor, it ran for one year…

Archaeoacoustics is a sub-field of archaeology and acoustics which studies the relationship between people and sound throughout history.

Architectural acoustics (also known as building acoustics) is the science and engineering of achieving a good sound within a building and…

Archival Disc (AD) is the trademarked name of a discontinued optical disc storage medium designed by Sony and Panasonic for long-term…

To make an argument from silence (Latin: argumentum ex silentio) is to express a conclusion that is based on the absence of statements in…

In audiology, the Articulation Index (AI) is a tool used to predict the amount of speech that is audible to a patient with a specific…

Artificial crowd noise is pre-recorded audio that simulates the live sounds of spectators, particularly during sporting events.

Artikulation is an electronic composition by György Ligeti. Composed and notated in January and February 1958, the piece was prepared and…

The Atlanta Exposition Speech was an address on the topic of race relations given by African-American scholar Booker T. Washington on…

Atmospheric diffraction is manifested in the following principal ways:

ATSC 3.0 is a major version of the ATSC standards for terrestrial television broadcasting created by the Advanced Television Systems…

In professional audio and telecommunications, attack time is the time between the instant that a signal at the input of a device or…

In physics, attenuation – colloquially, damping – is the gradual loss of flux intensity through a medium. For instance, dark glasses…

The linear attenuation coefficient, attenuation coefficient, or narrow-beam attenuation coefficient characterizes how easily a volume of…

An attenuator is a passive broadband electronic device that reduces the power of a signal without appreciably distorting its waveform.

Audio analysis refers to the extraction of information and meaning from audio signals for analysis, classification, storage, retrieval…

An audio analyzer is a test and measurement instrument used to objectively quantify the audio performance of electronic and…

In digital audio using pulse-code modulation (PCM), bit depth is the number of bits of information in each sample, and it directly…

In audio engineering, a bus (alternate spelling buss, plural busses) is a signal path that can be used to combine (sum) individual audio…

In the domain of digital audio, a control surface is a human interface device (HID) that allows the user to control a digital audio…

Audio crossovers are a type of electronic filter circuitry that splits an audio signal into two or more frequency ranges, so that the…

Audio editing software is any software or computer program which allows editing and generating audio data. Audio editing software can be…

Equalization, or simply EQ, in sound recording and reproduction is the process of adjusting the volume of different frequency bands within…

Audio equipment refers to devices that reproduce, record, or process sound. This includes microphones, radio receivers, AV receivers, CD…

Audio equipment testing is the measurement of audio quality through objective and/or subjective means. The results of such tests are…

Audio feedback (also known as acoustic feedback, howlround in the UK, or simply as feedback) is a positive feedback situation that may…

Audio forensics is the field of forensic science relating to the acquisition, analysis, and evaluation of sound recordings that may…

An audio frequency or audible frequency (AF) is a periodic vibration whose frequency is audible to the average human. The SI unit of…

An audio interface is a piece of computer hardware that allows the input and output of audio signals to and from a host computer or…

An audio letter is an audio recording sent by postal mail to a recipient. The practice was more common when charges for long-distance…

Audio mixing is the process by which multiple sounds are combined into one or more audio channels. In the process, a source's volume…

In sound recording and reproduction, audio mixing is the process of optimizing and combining multitrack recordings into a final mono…

An audio multicore cable (often colloquially referred to as a multicore, snake cable or snake) is a thick cable which usually contains…

In audio and broadcast engineering, Audio networking is the use of a network to distribute real-time digital audio. Audio Networking…

Audio noise measurement is a process carried out to assess the quality of audio equipment, such as the kind used in recording studios…

Audio normalization is the application of a constant amount of gain to an audio recording to bring the amplitude to a target level (the…

Audio power is the electrical power transferred from an audio amplifier to a loudspeaker, measured in watts. The electrical power…

An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an…

Audio restoration is the process of removing imperfections (such as hiss, impulse noise, crackle, wow and flutter, background noise, mains…

An audio signal is a representation of sound, typically using either a changing level of electrical voltage for analog signals or a series…

Audio signal flow is the path an audio signal takes from source to output. The concept of audio signal flow is closely related to the…

Audio signal processing is a subfield of signal processing that is concerned with the electronic manipulation of audio signals.

Audio system measurements are used to quantify audio system performance. These measurements are made for several purposes. Designers take…

Since the widespread adoption of reel-to-reel audio tape recording in the 1950s, audio tapes and tape cassettes have been available in…

Time stretching is the process of changing the speed or duration of an audio signal without affecting its pitch. Pitch scaling is the…

An audio tour or audio guide provides a recorded spoken commentary, normally through a handheld device, to a visitor attraction such as a…

An audiogram is a graph that shows the audible threshold for standardized frequencies as measured by an audiometer. The Y axis represents…

AudioID is a commercial technology for automatically identifying audio material using acoustic fingerprints. Audio data is recognized…

Audiology (from Latin audīre 'to hear'; and from Greek branch of learning -λογία, -logia) is a branch of science that studies hearing…

Audiology and hearing health professionals in developed and developing countries describes a field of study and practice that examines the…

An audiometer is a machine used for evaluating hearing acuity. They usually consist of an embedded hardware unit connected to a pair of…

An Audiometrist (from Latin audīre, "to hear"; and from Italian -metria, “to measure” ) or Audiometric Officer, is a health-care…

Audiometry (from Latin audīre 'to hear' and metria 'to measure') is a branch of audiology and the science of measuring hearing acuity…

An audiophile (from Latin: audīre, lit. 'to hear' + Greek: φίλος, romanized: philos, lit. 'loving') is a person who is enthusiastic about…

Audioprosthology is the profession of the fitting of a hearing aid, or auditory prosthesis. An audioprosthologist is defined as “an…

Audiotape is magnetic tape used for storing audio. Information stored can be in the form of either an analog or digital signal.

Audiovisualogy is the study of audiovisual media, including cinema, television or other visual art forms.

Audism as described by deaf activists is a form of discrimination directed against deaf people, which may include those diagnosed as deaf…

The auditory brainstem response (ABR), also called brainstem evoked response audiometry (BERA) or brainstem auditory evoked potentials…

The auditory cortex is the part of the temporal lobe that processes auditory information in humans and many other vertebrates.

Auditory events describe the subjective perception, when listening to a certain sound situation. This term was introduced by Jens Blauert…

Auditory exclusion is a form of temporary loss of hearing occurring under high stress. As such it is related to tunnel vision and "the…

Auditory fatigue is defined as a temporary loss of hearing after exposure to sound. This results in a temporary shift of the auditory…

Auditory feedback (AF) is an aid used by humans to control speech production and singing by helping the individual verify whether the…

The Auditory Hazard Assessment Algorithm for Humans (AHAAH) is a mathematical model of the human auditory system that calculates the risk…

Auditory hypersensitivity is a general term for heightened responses to some kinds of sounds, including responses of discomfort or distress.

Auditory illusions are illusions of real sound or outside stimulus. These false perceptions are the equivalent of an optical illusion: the…

Auditory integration training (AIT) is a procedure pioneered in France by Guy Bérard. Bérard promoted AIT as a cure for clinical…

In audio signal processing, auditory masking occurs when the perception of one sound is affected by the presence of another sound.

Auditory neuropathy (AN) is a hearing disorder in which the outer hair cells of the cochlea are present and functional, but sound…

Auditory neuropathy spectrum disorder (ANSD) is a specific form of hearing loss defined by the presence of normal or near-normal…

Auditory processing disorder (APD) is a neurodevelopmental disorder affecting the way the brain processes sounds. Individuals with APD…

In perception and psychophysics, auditory scene analysis (ASA) is a proposed model for the basis of auditory perception. This is…

Auditory science or hearing science is a field of research and education concerning the perception of sounds by humans, animals, or…

Auditory spatial attention is a specific form of attention, involving the focusing of auditory perception to a location in space.

Auditory verbal agnosia (AVA), also known as pure word deafness, is the inability to comprehend speech. Individuals with this disorder…

Auditory-verbal therapy is a method for teaching deaf children to listen and speak using hearing technology such as hearing aids and…

The auditosensory cortex is the part of the auditory system that is associated with the sense of hearing in humans. It occupies the…

In Western music and music theory, augmentation (from Late Latin augmentare, to increase) is the lengthening of a note or the widening of…

An augmented tuning is a musical tuning system for musical instruments that is associated with augmented triads, that is a root note, a…

Auracast is a broadcast audio feature of Bluetooth Low Energy (LE Audio) that enables a single transmitting device to stream audio to…

Aural rehabilitation is the process of identifying and diagnosing a hearing loss, providing different types of therapies to clients who…

Auralization is a procedure designed to model and simulate the experience of acoustic phenomena rendered as a soundfield in a virtualized…

Australian Bird Calls (also referred to as Songs of Disappearance: Australian Bird Calls and just Songs of Disappearance) is an album of…

Autoinflation is a minimally invasive procedure to treat serous non-infectious otitis media, in which a nasal balloon is inserted into the…

Automatic content recognition (ACR) is a technology used to identify content played on a media device or presented within a media file.

Automatic double-tracking or artificial double-tracking (ADT) is an analogue recording technique designed to enhance the sound of voices…

Automatic track warning system (ATWS, German: Rottenwarnanlage) is a technical device used during track construction for occupational…

An automixer, or automatic microphone mixer, is a live sound mixing device that automatically reduces the strength of a microphone's audio…

Autophony (also tympanophony) is the unusually loud hearing of a person's own voice.

Autosomal dominant cerebellar ataxia, deafness, and narcolepsy (ADCADN) is a rare progressive genetic disorder that primarily affects the…

AutoTune is an audio processor software application released on September 19, 1997, by the American company Antares Audio Technologies. It…

An aux-send (auxiliary send) is an electronic signal-routing output used on multi-channel sound mixing consoles used in recording and…

An audio/video receiver (AVR) or a stereo receiver is a consumer electronics component used in a home theater, home audio, or hi-fi system.

Awaaz Foundation (meaning "the organisation against sound" – "Awaaz" means "sound" in Urdu) is a charitable trust and non-governmental…

An awkward silence or awkward pause is an uncomfortable pause in a conversation or presentation. The unpleasant nature of such silences…