Lamb waves
In solid mechanics, Lamb waves propagate in solid plates or spheres. They are elastic waves whose particle motion lies in the plane that…
LAME
LAME is a software encoder that converts digital audio into the MP3 audio coding format. LAME is a free software project that was first…
Lament bass
In music, the lament bass is a ground bass, built from a descending perfect fourth from tonic to dominant, with each step harmonized.
LANDR
LANDR Audio is a cloud-based music creation platform developed by MixGenius, an artificial intelligence company based in Montreal, Quebec.
Language deprivation in children with hearing loss
Language deprivation in deaf and hard-of-hearing children is a delay in language development that occurs when sufficient exposure to…
Laser microphone
A laser microphone is a surveillance device that uses a laser beam to detect sound vibrations in a distant object. It can be used to…
Laser turntable
A laser turntable (or optical turntable) is a phonograph that plays standard LP records (and other gramophone records) using laser beams…
Laser ultrasonics
Laser-ultrasonics uses lasers to generate and detect ultrasonic waves. It is a non-contact technique used to measure materials thickness…
Latency (audio)
Latency refers to a short period of delay (usually measured in milliseconds) between when an audio signal enters a system and when it…
Lateral wave
In electromagnetics, acoustics and seismology, lateral waves or head waves are interfacial waves that are launched at or near grazing…
Lateralization of bird song
Passerine birds produce song through the vocal organ, the syrinx, which is composed of bilaterally symmetric halves located where the…
Lattice (music)
"is a way of modeling the tuning relationships of a just intonation system. It is an array of points in a periodic multidimensional pattern.
Laugh track
A laugh track (or laughter track) is an audio recording consisting of laughter (and other audience reactions) usually used as a separate…
Le Son 7
Le Son 7 is a sound art gallery dedicated exclusively to audio. The gallery works with many artists to present different aspects of sound…
Least-squares spectral analysis
Least-squares spectral analysis (LSSA) is a class of methods for estimating a frequency spectrum by fitting sinusoids to data using a…
Legitmix
Legitmix was a Canadian company that offered services to artists who create remixes. The company launched in 2011 and had offices in…
Lenovo Smart Assistant
The Lenovo Smart Assistant is a Google Assistant-enabled smart speaker developed by Lenovo. The device was announced at CES 2017 and…
Leslie speaker
The Leslie speaker is a combined amplifier and loudspeaker that modifies the sound of an electric musical instrument by rotating a baffle…
Let Nature Sing
"Let Nature Sing" is a single released by the Royal Society for the Protection of Birds on 26 April 2019, consisting of 2 minutes 32…
Let's Stay Together (Al Green song)
"Let's Stay Together" is a song by American singer Al Green from his 1972 album of the same name. It was produced and recorded by Willie…
Level (logarithmic quantity)
In science and engineering, a power level and a field level (also called a root-power level) are logarithmic magnitudes of certain…
Lexicon JamMan
The JamMan is an audio looping device manufactured by Lexicon in the mid-1990s. The idea for the JamMan began with modifications Gary Hall…
Lexicon MX200
The Lexicon MX200 is an effects processor from the early 2000s made by Lexicon of Salt Lake City. The company calls it a "dual reverb…
Libdash
libdash is a computer software library which provides an object-oriented interface to the Dynamic Adaptive Streaming over HTTP (DASH)…
Light's Golden Jubilee
Light's Golden Jubilee was a celebration of the 50th anniversary of Thomas Edison's incandescent light bulb, held on October 21, 1929…
Lighthill's eighth power law
In aeroacoustics, Lighthill's eighth power law states that power of the sound created by a turbulent motion, far from the turbulence, is…
LILFU
LILFU stands for low intensity, low frequency ultrasound. It is a new technique devised by the team of William J. Tyler from Arizona State…
Line 6 DL4
The DL4 Delay Modeler by Line 6, introduced in 1999, is a digital delay pedal. It is one of the first digital modeling effects units.
Line 6 Flextone
The Line 6 Flextone was the first in a series of guitar amplifiers to package Line 6's POD digital modeling system in a stand-alone…
Line array
A line array is a loudspeaker system that is made up of a number of usually identical loudspeaker elements mounted in a line and fed in…
Line level
Line level is the specified strength of an audio signal used to transmit analog sound between audio components such as CD and DVD players…
Line source
A line source, as opposed to a point source, area source, or volume source, is a source of air, noise, water contamination or…
Line-in recording
Line-in recording is a term often used by manufacturers of sound equipment to refer to the capability of a device to record line level…
Linear arithmetic synthesis
Linear arithmetic synthesis, or LA synthesis, is a means of sound synthesis invented by the Roland Corporation when they released their…
Linear elasticity
Linear elasticity is a mathematical model of how solid objects deform and become internally stressed by prescribed loading conditions. It…
Linkwitz–Riley filter
A Linkwitz–Riley (L-R) filter is an infinite impulse response filter used in Linkwitz–Riley audio crossovers. It is named after its…
Linn Isobarik
The Linn Isobarik, nicknamed "Bariks" or "Briks", is a loudspeaker designed and manufactured by Linn Products. The Isobarik is known for…
Lip reading
Lip reading, also known as speechreading, is a technique of understanding a limited range of speech by visually interpreting the movements…
Lip sewing
Lip sewing or mouth sewing, the operation of stitching together human lips, is a form of body modification. It may be carried out for…
Lip sync
Lip sync or lip synch, short for lip synchronization, is a technical term for matching a speaking or singing person's lip movements with…
List of Yamaha Corporation products
This is a list of products made by Yamaha Corporation. This does not include products made by Bösendorfer, which has been a wholly owned…
Listener fatigue
Listener fatigue (also known as listening fatigue or ear fatigue) is a phenomenon that occurs after prolonged exposure to an auditory…
Listening
Listening is the act of paying attention to sounds. While often described as attention to sound, listening is increasingly understood as…
Lithuanian accentuation
In Lithuanian phonology, stressed heavy syllables are pronounced in one of two prosodically distinct ways. One way is known as the acute…
Live sound mixing
Live sound mixing is the blending of multiple sound sources by an audio engineer using a mixing console or software. Sounds that are mixed…
Livewire (networking)
Livewire is an audio-over-IP system created by Axia Audio, a division of Telos Alliance. Its primary purpose is routing and distributing…
Livin' la Vida Loca
"Livin' la Vida Loca" (transl. "Livin' the Crazy Life") is a song recorded by Puerto Rican singer Ricky Martin for his fifth studio album…
LM3875
LM3875 was a 56 watt amplifier chip made by Texas Instruments (previously National Semiconductor). It was very popular in the DIY audio…
Lockheed F-104 Starfighter
The Lockheed F-104 Starfighter is an American single-engine, supersonic interceptor. Created as a day fighter by Lockheed as one of the…
Logic Pro
Logic Pro is a proprietary digital audio workstation (DAW) and MIDI sequencer software application for the macOS platform developed by…
Lombard effect
The Lombard effect or Lombard reflex is the involuntary tendency of speakers to increase their vocal effort when speaking in loud noise to…
London Philharmonic Orchestra
The London Philharmonic Orchestra (LPO) is a British orchestra based in London. One of five permanent symphony orchestras in London, the…
Lone Ranger
The Lone Ranger is a fictional masked former Texas Ranger who fought outlaws in the American Old West with his Native American friend…
Long Black Veil
"Long Black Veil" is a 1959 country ballad, written by Danny Dill and Marijohn Wilkin and originally recorded by Lefty Frizzell.
Long-range acoustic device
A long-range acoustic device (LRAD), acoustic hailing device (AHD), or sound cannon is a specialized loudspeaker and sound weapon that…
Longfellow Boom
The Longfellow Boom is a loud, unexplained phenomenon reported in the Longfellow community of Minneapolis, Minnesota, United States.
Loop bin duplicator
A loop bin duplicator is a specialized audio tape machine used in the duplication of pre-recorded audio cassettes and 8-track cartridges.
Los Angeles Recording School
The Los Angeles Recording School is a private, for-profit college and is a division of the larger Los Angeles Film School. It is located…
Lossless predictive audio compression
Lossless predictive audio compression (LPAC) is an improved lossless audio compression algorithm developed by Tilman Liebchen, Marcus…
Loud music
Loud music is music that is played at a high volume, often to the point where it disturbs others and causes hearing damage.
Loudest band
The loudest band in the world is a subject of some dispute in musical circles. Many bands have claimed to be the loudest, measuring this…
Loudness
In acoustics, loudness is the subjective perception of sound pressure. More formally, it is defined as the "attribute of auditory…
Loudness monitoring
Loudness monitoring of programme levels is needed in radio and television broadcasting, as well as in audio post production.
Loudness war
The loudness war (or loudness race) is a trend of increasing audio levels in recorded music, which reduces audio fidelity and—according to…
Loudspeaker acoustics
Loudspeaker acoustics is a subfield of acoustical engineering concerned with the design of loudspeakers. It focuses on the reproduction of…
Loudspeaker enclosure
A loudspeaker enclosure or loudspeaker cabinet is an enclosure (often rectangular box-shaped) in which speaker drivers (e.g., woofers and…
Loudspeaker measurement
Loudspeaker measurement is the practice of determining the behaviour of loudspeakers by measuring various aspects of performance.
Loudspeaker time alignment
Loudspeaker time-alignment, usually simply referred to as "time-alignment" or "Time-Align", is a term applied in loudspeaker systems which…
Lovesick Blues
"Lovesick Blues" is a Tin Pan Alley song, composed by Cliff Friend, with lyrics by Irving Mills. It first appeared in the 1922 musical…
Low-pass filter
A low-pass filter is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with…
LP record
The LP (from long playing or long play) is an analog sound storage medium, specifically a phonograph record format characterized by a…
LS3/5A
The LS3/5A is a small studio monitor loudspeaker originated by the BBC for use by outside broadcast vans to ensure quality of their…
LUFS
Loudness units relative to full scale (LUFS), also known as loudness, K-weighted, relative to full scale (LKFS), is a standard loudness…
Lumped-element model
The lumped-element model (also called lumped-parameter model, or lumped-component model) is a simplified representation of a physical…
Lyric Hearing
Lyric Hearing is an extended wear hearing aid developed by InSound Medical, founded by medical device inventor entrepreneur Adnan Shennib…
Lyric soprano
A lyric soprano is a type of operatic soprano voice that has a warm quality with a bright, full timbre that can be heard over an orchestra.