E major
E major is a major scale based on E, consisting of the pitches E, F♯, G♯, A, B, C♯, and D♯. Its key signature has four sharps. Its…
E minor
E minor is a minor scale based on E, consisting of the pitches E, F♯, G, A, B, C, and D. Its key signature has one sharp, on the F. Its…
E-flat major
E-flat major is a major scale based on the note E♭, consisting of the pitches E♭, F, G, A♭, B♭, C, and D. Its key signature has three…
E-flat minor
E-flat minor is a minor scale based on E♭, consisting of the pitches E♭, F, G♭, A♭, B♭, C♭, and D♭. Its key signature consists of six…
Ear
In vertebrates, an ear is the organ that enables hearing and (in mammals) body balance using the vestibular system. In humans, the ear is…
Ear canal
The ear canal (external acoustic meatus, external auditory meatus, EAM) is a pathway running from the outer ear to the middle ear.
Ear training
In music, ear training is the study and practice in which musicians learn various aural skills to detect and identify pitches, intervals…
Ear trumpet
An ear trumpet is a tubular or funnel-shaped device which collects sound waves and leads them into the ear. They are used as hearing aids…
Eardrum
In the anatomy of humans and various other tetrapods, the eardrum, also called the tympanic membrane or myringa, is a thin, cone-shaped…
Earl Schubert
Earl D. Schubert (November 8, 1916 – December 1, 1999) was an American academic scientist specialized in psychoacoustics. He was a…
EarMaster
EarMaster is a music application for Windows and Mac launched in 1996 by Danish editor Miditec. It has been ported to multiple systems…
Earmold
An earmold (also spelled; ear mold, ear mould or earmould) is a device worn inserted into the ear for sound conduction or hearing…
Earmuffs
Earmuffs are accessories designed to cover a person's ears either for warmth or for hearing protection. Both types of earmuff consist of a…
Earplug
An earplug is a device that is inserted in the ear canal to protect the user's ears from loud noises, intrusion of water, foreign bodies…
Earth Angel
"Earth Angel", occasionally referred to as "Earth Angel (Will You Be Mine)", is a song by American doo-wop group the Penguins. Produced by…
Earth.fm
Earth.fm is a non-profit digital platform, application software, and audio repository that publishes field recordings of natural…
EBU R 128
EBU R 128 is a recommendation for loudness normalisation and maximum level of audio signals. It primarily targets audio mixing of…
Echo
In audio signal processing and acoustics, an echo is a reflection of sound that arrives at the listener with a delay after the direct…
Echo chamber
An echo chamber is a hollow enclosure used to produce reverberation, usually for recording purposes. A traditional echo chamber is covered…
Echo suppression and cancellation
Echo suppression and echo cancellation are methods used in telephony to improve voice quality by preventing echo from being created or…
Echogenicity
Echogenicity (sometimes as echogenecity) or echogeneity is the ability to bounce an echo, e.g. return the signal in medical ultrasound…
Echolocation jamming
Echolocation (or sonar) systems of animals, like human radar systems, are susceptible to interference known as echolocation jamming or…
EcoDemonstrator
The ecoDemonstrator Program is a Boeing flight test research program, which has used a series of specially modified aircraft to develop…
Ectrodactyly–ectodermal dysplasia–cleft syndrome
Ectrodactyly–ectodermal dysplasia–cleft syndrome, or EEC, and also referred to as EEC syndrome and split hand–split foot–ectodermal…
Edison Disc Record
The Edison Diamond Disc Record is a type of phonograph record marketed by Thomas A. Edison, Inc. on their Edison Record label from 1912 to…
Edison's Phonograph Doll
Edison's Phonograph Doll is a children's toy doll developed by the Edison Phonograph Toy Manufacturing Company (founded by William W…
Effects loop
An effects loop is a series of audio effects units, connected between two points of a signal path (the route that a signal would travel…
EIAJ MTS
EIAJ MTS is a multichannel television sound standard created by the EIAJ.
Einstein on the Beach
Einstein on the Beach is an opera in four acts by Robert Wilson with music composed by Philip Glass. The opera eschews traditional…
El Cantante (song)
"El Cantante" (The Singer) is the 1978 signature song of Puerto Rican salsa singer Héctor Lavoe and first single of the album Comedia. The…
Electric Jukebox
Electric Jukebox was a digital media player developed by The Electric Jukebox Company. Designed as a dongle, and a "Nintendo Wii style"…
Electric vehicle warning sounds
Electric vehicle warning sounds are sounds designed to alert pedestrians to the presence of electric drive vehicles such as hybrid…
Electrical network frequency analysis
Electrical network frequency (ENF) analysis is an audio forensics technique for validating audio recordings by comparing frequency changes…
Electrical transcription
Electrical transcriptions are special phonograph recordings made exclusively for radio broadcasting, which were widely used during the…
Electrical tuning
Electrical tuning is a mechanism by which vertebrates such as frogs and reptiles, which lack a long cochlea, discriminate sound.
Electroacoustic phenomena
Electroacoustic phenomena arise when ultrasound propagates through a fluid containing ions. The associated particle motion generates…
Electrocochleography
Electrocochleography (abbreviated ECochG or ECOG) is a technique of recording electrical potentials generated in the inner ear and…
Electromagnetic diaphragm
An electromagnetic diaphragm is a form of capacitive sensor used on an electronic stethoscope. The diaphragm is coated with a conductive…
Electromagnetically induced acoustic noise
Electromagnetically induced acoustic noise, electromagnetically excited acoustic noise, or more commonly known as coil whine, is audible…
Electronic mixer
An electronic mixer is a device that combines two or more electrical or electronic signals into one or two composite output signals.
Electronic pest control
Electronic pest control is the name given to any of several types of electrically powered devices designed to repel or eliminate pests…
Electropalatography
Electropalatography (EPG) is a technique used to monitor contacts between the tongue and hard palate, particularly during articulation and…
Electrophonic sounds
Electrophonic sounds are sounds heard far away from—and produced indirectly by—an event such as a meteor or possibly an aurora.
Elocution
Elocution is the study of formal speaking in pronunciation, grammar, style, and tone as well as the idea and practice of effective speech…
Eltro information rate changer
The Eltro information rate changer is an analog recording tool for changing pitch without changing speed and vice versa. Patents for the…
Emotional origins of music
The theory of the emotional origins of music, first proposed by David Teie, is based on the proposition that "... human music presents…
Empirical Labs Distressor
The Empirical Labs EL8 Distressor Compressor/Limiter is an audio compression unit designed by Dave Derr and first sold in 1995. The name…
Encyclopedia of Recorded Sound
The Encyclopedia of Recorded Sound is a reference work that, among other things, describes the history of sound recordings, from November…
End correction
In acoustics, end correction is a short distance added to the length of a resonance pipe, in order to calculate the precise resonant…
Endaural phenomena
Endaural phenomena are sounds that are heard without any external acoustic stimulation. Endaural means "in the ear". Phenomena include…
Endolymphatic hydrops
Endolymphatic hydrops is a disorder of the inner ear. It consists of an excessive build-up of the endolymph fluid, which fills the hearing…
Engine braking
Engine braking occurs when the retarding forces within an internal combustion engine are used to slow down a motor vehicle, as opposed to…
Enhanced CD
Enhanced CD is a certification mark of the Recording Industry Association of America for various technologies that combine audio and…
Enharmonic equivalence
In music, two written notes have enharmonic equivalence if they produce the same pitch but are notated differently. Similarly, written…
Enharmonic keyboard
An enharmonic keyboard is a musical keyboard, where enharmonically equivalent notes do not have identical pitches. A conventional keyboard…
Enharmonic scale
In music theory, an enharmonic scale is an ancient Greek musical scale which contains four notes tuned to approximately quarter tone…
Enlarged vestibular aqueduct
Large vestibular aqueduct is a structural deformity of the inner ear. Enlargement of this duct is one of the most common inner ear…
Environment of Belgium
The environment of Belgium is generally affected by the high population density in most of the country. However, due to consistent efforts…
Environmental issues in India
There are multiple environmental issues in India. Air pollution, water pollution, garbage, domestically prohibited goods and pollution of…
Environmental noise
Environmental noise is an accumulation of noise pollution that occurs outside. This noise can be caused by transport, industrial, and…
Environmental Noise Directive
The Environmental Noise Directive (END) 2002/49/EC is a directive from the European Union to give information to the public about the…
EPNdB
Effective perceived noise in decibels (EPNdB) or Effective Perceived Noise Level (EPNL) is a measure of the relative noisiness of an…
Equal-loudness contour
An equal-loudness contour is a measure of sound pressure level, over the frequency spectrum, for which a listener perceives a constant…
Equivalent input
Equivalent input (also input-referred, referred-to-input (RTI), or input-related), is a method of referring to the signal or noise level…
Equivalent rectangular bandwidth
The equivalent rectangular bandwidth or ERB is a measure used in psychoacoustics, which gives an approximation to the bandwidths of the…
Error concealment
Error concealment is a technique used in signal processing that aims to minimize the deterioration of signals caused by missing data…
Escala nordestina
The escala nordestina (Portuguese: "Northeastern scale") are a body of musical scales commonly used in the music of the Nordeste, the…
Essynth
Essynth is a mathematical model for interactive sound synthesis based on the evolutionary computation which uses genetic operators and…
EtherSound
EtherSound is an audio-over-Ethernet technology for audio engineering and broadcast engineering applications. EtherSound is developed and…
Euler–Fokker genus
In music theory and tuning, an Euler–Fokker genus (plural: genera), named after Leonhard Euler and Adriaan Fokker, is a musical scale in…
European Conference on Underwater Acoustics
The European Conference on Underwater Acoustics (ECUA) was a conference on underwater acoustics that took place in Europe every two years…
Evil laughter
Evil laughter or maniacal laughter is a distinct laughter that is typically exhibited by villains in fiction. It is associated with the…
Evolution of mammalian auditory ossicles
The evolution of mammalian auditory ossicles was an evolutionary process that resulted in the formation of the mammalian middle ear, where…
Evolution of the cochlea
Cochlea is Latin for “snail, shell or screw” and originates from the Greek word κοχλίας kokhlias. The modern definition, the auditory…
Exciter (audio transducer)
An Exciter is an electroacoustic transducer. Exciters differ from the more common loudspeaker in that they have no cone and rely on being…
Exciter (effect)
An exciter (also called a harmonic exciter or aural exciter) is an audio signal processing technique used to enhance a signal by dynamic…
Experimental Talking Clock
The "Experimental Talking Clock" was recorded c. 1878 by inventor Frank Lambert. It was long thought to be the world's oldest playable…
Exploito
Exploito is a term generally given to describe cover version or sound-alike recordings that capitalize on the official recordings of…
Exposure action value
An Exposure Action Value (EAV) or Action Value (AV) is a limit set on occupational exposure to noise where, when those values are…
Extended Resolution Compact Disc
Extended Resolution Compact Disc (XRCD) is a mastering and manufacture process patented by JVC (Victor Company of Japan, Ltd) for…
Extended-wear hearing aid
An extended-wear hearing aid is a type of hearing aid that is placed deep in the ear canal and can be worn for several months at a time…
Extracolumella
The extracolumella, sometimes called the extrastapes or hyostapes, is an anatomical structure, generally cartilaginous, found in the…
EyeHarp
The EyeHarp is an electronic musical instrument controlled by the player's eye or head movements. It combines eye tracking hardware and…