Race record
Race records is a term for 78-rpm phonograph records marketed to African Americans between the 1920s and 1940s. They primarily contained…
Radio acoustic ranging
Radio acoustic ranging (RAR), occasionally written as "radio-acoustic ranging", was a method for determining a ship's precise location at…
Radio Free Europe (song)
"Radio Free Europe" is the debut single by American alternative rock band R.E.M., released in 1981 on the short-lived independent record…
Radio music ripping
Music radio ripping is the process of digitally extracting and saving songs played on the radio. Ripping is more than simply recording the…
Radio silence
In telecommunications, radio silence or emissions control (EMCON) is a status in which all fixed or mobile radio stations in an area are…
Radio-frequency sweep
Radio frequency sweep or frequency sweep or RF sweep apply to scanning a radio frequency band for detecting signals being transmitted…
RAF Denge
Royal Air Force Denge or more simply RAF Denge is a former Royal Air Force station near Dungeness, in Kent, England. It is best known for…
Rapper's Delight
"Rapper's Delight" is a 1979 rap song that serves as the debut single of American hip-hop trio the Sugarhill Gang, produced by Sylvia…
Rare groove
Rare groove is music that is obscure or very hard to source. Rare groove is primarily associated with funk, R&B and jazz funk, but is also…
Rare-earth magnet
A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements. Developed in the 1970s and 1980s, rare-earth…
Rarefaction
Rarefaction is the reduction of an item's density, the opposite of compression. Like compression, which can travel in waves (sound waves…
Rat Sound
Rat Sound Systems is a sound equipment provider of touring sound reinforcement equipment and services to the concert touring industry…
Rate of fire
Rate of fire is the frequency at which a specific weapon can fire or launch its projectiles. This can be influenced by several factors…
Ray Butts EchoSonic
The EchoSonic is a guitar amplifier made by Ray Butts. It was the first portable guitar amplifier with a built-in tape echo effect, and…
Rayleigh wave
In solid mechanics, Rayleigh waves are a type of surface acoustic wave that travel along the surface of solids. They can be produced in…
RC coupling
RC coupling is the most widely used method of coupling in multistage amplifiers. It was invented by Prashobh James Kennedy and Noel…
RCA tape cartridge
The RCA tape cartridge (labeled the RCA Sound Tape Cartridge) is a magnetic tape audio format that was designed to offer stereo…
Re-amp
Re-amping is a process often used in multitrack recording in which a recorded signal is routed back out of the editing environment and run…
Re-recording (music)
A re-recording is a recording produced following a new performance of a work of music. This is most commonly, but not exclusively, by a…
Real ear measurement
Real ear measurement is the measurement of sound pressure level in a patient's ear canal developed when a hearing aid is worn.
Real-time analyzer
A real-time analyzer (RTA) is a professional audio device that measures and displays the frequency spectrum of an audio signal; a spectrum…
Rec. 2020
ITU-R Recommendation BT.2020, more commonly known by the abbreviations Rec. 2020 or BT.2020, defines various aspects of…
Rec. 2100
ITU-R Recommendation BT.2100, more commonly known by the abbreviations Rec. 2100 or BT.2100, introduced high-dynamic-range television…
Record Collectors Are Pretentious Assholes
Record Collectors Are Pretentious Assholes is hardcore punk band Poison Idea's second EP. It was released in 1985 through Fatal Erection…
Record press
A record press or stamper is a machine for manufacturing vinyl records. It is essentially a hydraulic press fitted with thin nickel…
Record restoration
Record restoration, a particular kind of audio restoration, is the process of converting the
Record sales
Record sales or music sales are activities related to selling music recordings (albums, singles, or music videos) through physical record…
Record sleeve
A record sleeve is the outer covering of a vinyl record. Alternative terms are dust sleeve, album liner and liner.
Record Store Day
Record Store Day is a semi-annual event established in 2008 to "celebrate the culture of the independently owned record store".
Recording House of Radio Ukraine
Recording House of Radio Ukraine (Ukrainian: Будинок звукозапису Українського радіо) is a sound recording and concert complex of Radio…
Recording of the Israeli Declaration of Independence
The recording of the Israeli Declaration of Independence was a complete recording of the declaration using a direct to disc recording…
Recording practices of the Beatles
The studio practices of the Beatles evolved during the 1960s and, in some cases, influenced the way popular music was recorded.
Recording studio
A recording studio is a specialized facility for recording and mixing of instrumental or vocal musical performances, spoken words, and…
Recording the Beatles
Recording the Beatles: The Studio Equipment and Techniques Used to Create Their Classic Albums is a book by Kevin Ryan and Brian Kehew…
Recruitment (medicine)
Recruitment, in medicine, is a physical condition of the inner ear that leads to reduced tolerance of loudness. It commonly occurs in…
Reel-to-reel audio tape recording
Reel-to-reel audio tape recording, also called open-reel recording, is magnetic tape audio recording in which the recording tape is…
Reflection (physics)
Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the…
Reflective listening
Reflective listening is a communication strategy in which a listener improves their understanding of a speaker's idea by offering that…
Refraction (sound)
Refraction, in acoustics, comparable to the refraction of electromagnetic radiation, is the bending of sound propagation trajectories…
Register (music)
A register is the range within pitch space of some music or often musical speech. It may describe a given pitch or pitch class (or set of…
Regular tuning
Among alternative guitar-tunings, regular tunings have equal musical intervals between the paired notes of their successive open strings.
Related rights
In copyright law, related rights (or neighbouring rights) are the rights of a creative work not connected with the work's actual author…
Relative key
In music theory, relative keys are the major and minor scales that have the same key signatures (enharmonically equivalent), meaning that…
Relative pitch
Relative pitch is the ability of a person to identify or re-create a given musical note by comparing it to a reference note and…
Remaster
A remaster is a change in the sound or image quality of previously created forms of media, whether audiophonic, cinematic, or…
Remote recording
Remote recording, also known as location recording, is the act of making a high-quality complex audio recording of a live concert…
Repetition pitch
Repetition pitch is an unexpected sensation of tonality or pitch that often occurs in nature when a sound is reflected against a…
Resolution (music)
Resolution in Western tonal music theory is the move of a note or chord from dissonance (an unstable sound) to a consonance (a more final…
Resonance chamber
In acoustics, a resonance chamber is a cavity which enhances the transfer of energy from a sound source (e.g. a vibrating string) to the…
Resonant ultrasound spectroscopy
Resonant ultrasound spectroscopy (RUS) is a laboratory technique used in geology and material science to measure fundamental material…
Resonating device
A resonating device is a structure used by an animal that improves the quality of its vocalizations through amplifying the sound produced…
Resonator
A resonator is a device or system that exhibits resonance or resonant behavior. That is, it naturally oscillates with greater amplitude at…
Respect (Aretha Franklin recording)
"Respect" is a song recorded by American singer Aretha Franklin. It is a cover of the original song written and recorded by Otis Redding…
Respect (song)
"Respect" is a song by American soul singer-songwriter Otis Redding, originally recorded and released by himself in 1965 as a single from…
Rest (music)
A rest is the absence of a sound for a defined period of time in music, or one of the musical notation signs used to indicate that.
Reverb effect
A reverb effect, or reverb, is an audio effect applied to simulate reverberation. It may be created through physical means, such as echo…
Reverberation
In acoustics, reverberation (commonly shortened to reverb) is a persistence of sound after it is produced. It is often created when a…
Reverberation room
A reverberation room or reverberation chamber is a room designed to create reverberation, a diffuse or random incidence sound field (i.e…
Reverse correlation function
A reverse correlation function, also known as a revcor function, is an impulse response function associated with the processing of hearing…
Reverse echo
Reverse echo and reverse reverb are sound effects created as the result of recording an echo or reverb effect of an audio recording played…
Revolution 9
"Revolution 9" is a sound collage by English rock band the Beatles from their 1968 album The Beatles (also known as the "White Album").
REX2
REX2 is a proprietary type of audio sample loop file format developed by Reason Studios, a Swedish music software company.
Rhapsody in Blue
Rhapsody in Blue is a 1924 musical composition for solo piano and jazz band by George Gershwin. Commissioned by bandleader Paul Whiteman…
Rhythm Is Gonna Get You
"Rhythm Is Gonna Get You" is a song written by Enrique "Kiki" Garcia and Gloria Estefan, and released by Gloria Estefan and Miami Sound…
RIAA equalization
RIAA equalization is a specification for the recording and playback of phonograph records, established by the Recording Industry…
Ribs (recordings)
Ribs (рёбра, translit. ryobra), also known as music on ribs (Музыка на рёбрах), jazz on bones (Джаз на костях), bones, bone music or…
Rick Hall
Roe Erister "Rick" Hall (January 31, 1932 – January 2, 2018) was an American record producer, songwriter, and musician who became known as…
Ricoh Synchrofax
Ricoh Synchrofax is a Japanese dictating machine from 1959, reissued in 1974 as the 3M Sound Page (model 627AA and 627AG) as official…
Right to silence
The right to silence is a legal principle which guarantees any individual the right to refuse to answer questions from law enforcement…
Right to silence in Australia
The right to silence in Australia is the protection given to a person during criminal proceedings from adverse consequences of remaining…
Right to silence in England and Wales
The right to silence in England and Wales is the protection given to a person during criminal proceedings from adverse consequences of…
Rigler-Deutsch Index
The Rigler and Deutsch Index of Recorded Sound, also known as the Rigler Deutsch Index, is a union catalog collocation of the U.S.
Rijke tube
The Rijke tube is a cylindrical tube with both ends open, inside of which a heat source is placed that turns heat into sound, by creating…
Ringing out
Ringing out is a process in audio engineering technique used to prevent audio feedback between on-stage microphones and loudspeakers, and…
Ripping
Ripping is the extraction of digital content from a container, such as a CD, onto a new digital form and location. Later, the term was…
Road case
A road case, ATA case, or flight case is a shipping container specifically designed to protect musical instruments, motion picture…
Roadway noise
Roadway noise is the sound emanating from motor vehicles, collectively from tires contact on road surface, engine/transmission…
Roar
A roar /rɔːr/ is a type of animal vocalization that is loud, deep and resonating. Many mammals have evolved to produce roars and other…
Robert F. Kennedy's speech on the assassination of Martin Luther King Jr.
On April 4, 1968, United States Senator Robert F. Kennedy of New York delivered an improvised speech several hours after the assassination…
Robert V. Shannon
Robert V. Shannon is research professor of Otolaryngology-Head & Neck Surgery and Affiliated Research Professor of Biomedical Engineering…
Robinson–Dadson curves
The Robinson–Dadson curves are one of many sets of equal-loudness contours for the human ear, determined experimentally by D. W. Robinson…
Rockwell B-1 Lancer
The Rockwell B-1 Lancer is a supersonic variable-sweep wing heavy bomber used by the United States Air Force. It has been nicknamed the…
Roland Bolt amplifier
The Roland Bolt 30/60/100 was the only line of tube guitar amplifiers produced by Roland. The Bolt amplifier series was released in 1979.
Roland Jazz Chorus
Roland Jazz Chorus is the name given to a series of solid-state instrument amplifiers produced by the Roland Corporation in Japan since…
Roland Space Echo
The Roland Space Echo is a line of tape delay units introduced by Roland Corporation in 1974. Whereas some prior tape delay effects used…
Rome Convention for the Protection of Performers, Producers of Phonograms and Broadcasting Organisations
The Rome Convention for the Protection of Performers, Producers of Phonograms and Broadcasting Organisations also known as the…
Room acoustics
Room acoustics is a subfield of acoustics dealing with the behaviour of sound in enclosed or partially-enclosed spaces. The architectural…
Room modes
Room modes are the collection of resonances that exist in a room when the room is excited by an acoustic source such as a loudspeaker.
Root mean square
In mathematics, the root mean square (abbrev. RMS, rms or rms) of a set of values is the square root of the set's mean square.
Rose Room
"Rose Room", also known as "In Sunny Roseland", is a 1917 jazz standard, music by Art Hickman, lyrics by Harry Williams. It is almost…
Roughness (psychophysics)
Roughness is studied by examining how textures are perceived and encoded by an individual's somatosensory system. In an experiment to…
Round window
The round window is one of the two openings from the middle ear into the inner ear. It is sealed by the secondary tympanic membrane (round…
Rowe Customusic
Rowe Customusic is a background music system from the 1960s and 1970s. Up to six Fidelipac type C endless-loop magnetic tape cartridges…
Roy D. Patterson
Roy Dunbar Patterson is an auditory neuroscientist in the Department of Physiology, Development, and Neuroscience at the University of…
Rubens tube
A Rubens tube, also known as a standing wave flame tube, or simply flame tube, is a physics apparatus for demonstrating acoustic standing…
Rumble (instrumental)
"Rumble" is an instrumental by American group Link Wray & His Ray Men. Released as a single in the United States on March 31, 1958…
Rumble (noise)
A rumble is a continuous deep, resonant sound, such as the sound made by heavy vehicles or thunder. In the context of audio reproduction…
Run-length limited
Run-length limited (RLL) is a line coding technique that is used to send arbitrary data over a communications channel with bandwidth…
Rustle noise
Rustle noise is noise consisting of aperiodic pulses in a Poisson distribution, characterized by the average time between those pulses…