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Sound recording and reproduction information


Frances Densmore and Blackfoot chief Mountain Chief working on a recording project of the Bureau of American Ethnology (1916).

Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording.

Acoustic analog recording is achieved by a microphone diaphragm that senses changes in atmospheric pressure caused by acoustic sound waves and records them as a mechanical representation of the sound waves on a medium such as a phonograph record (in which a stylus cuts grooves on a record). In magnetic tape recording, the sound waves vibrate the microphone diaphragm and are converted into a varying electric current, which is then converted to a varying magnetic field by an electromagnet, which makes a representation of the sound as magnetized areas on a plastic tape with a magnetic coating on it. Analog sound reproduction is the reverse process, with a larger loudspeaker diaphragm causing changes to atmospheric pressure to form acoustic sound waves.

Digital recording and reproduction converts the analog sound signal picked up by the microphone to a digital form by the process of sampling. This lets the audio data be stored and transmitted by a wider variety of media. Digital recording stores audio as a series of binary numbers (zeros and ones) representing samples of the amplitude of the audio signal at equal time intervals, at a sample rate high enough to convey all sounds capable of being heard. A digital audio signal must be reconverted to analog form during playback before it is amplified and connected to a loudspeaker to produce sound.

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Sound recording and reproduction

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Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice...

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History of sound recording

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era (1975–present) Experiments in capturing sound on a recording medium for preservation and reproduction began in earnest during the Industrial Revolution...

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Digital audio

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Digital audio is also the name for the entire technology of sound recording and reproduction using audio signals that have been encoded in digital form...

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Timeline of audio formats

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format is a medium for sound recording and reproduction. The term is applied to both the physical recording media and the recording formats of the audio...

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Video

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VP8-WebM VC-1 (SMPTE) General Index of video-related articles Sound recording and reproduction Video editing Videography Video format 360-degree video Cable...

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Multitrack recording

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Multitrack recording (MTR), also known as multitracking, is a method of sound recording developed in 1955 that allows for the separate recording of multiple...

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Audio

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(disambiguation) Audible (disambiguation) Audiobook Radio broadcasting Sound recording and reproduction Sound reinforcement This disambiguation page lists articles associated...

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Tape recorder

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machine or simply a tape recorder, is a sound recording and reproduction device that records and plays back sounds usually using magnetic tape for storage...

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Comparison of free software for audio

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notable free and open source software for use by sound engineers, audio producers, and those involved in sound recording and reproduction. Various projects...

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Sound design

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sound recording and reproduction, live performance, sound art, post-production, radio, new media and musical instrument development. Sound design commonly...

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Magnetic tape

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and binary computer data. Magnetic tape revolutionized sound recording and reproduction and broadcasting. It allowed radio, which had always been broadcast...

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Record

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video, and television recordings Photography, photographic record Video recording, of both images and sounds Sound recording and reproduction Analogue...

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Musician

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depending on the cultures and backgrounds involved. A musician who records and releases music can be known as a recording artist. A composer is a musician...

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Ground lift

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In sound recording and reproduction, ground lift or earth lift is a technique used to reduce or eliminate ground-related noise arising from ground loops...

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Stereo imaging

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aspect of sound recording and reproduction of stereophonic sound concerning the perceived spatial locations of the sound source(s), both laterally and in depth...

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Valve audio amplifier

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audio amplifier (US) is a valve amplifier used for sound reinforcement, sound recording and reproduction. Until the invention of solid state devices such...

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Audio engineer

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processing and audio effects, mixing, reproduction, and reinforcement of sound. Audio engineers work on the "technical aspect of recording—the placing...

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SPARS code

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Professional Audio Recording Services (SPARS) for commercial compact disc releases to denote aspects of the sound recording and reproduction process, distinguishing...

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Dynamic range compression

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Compression is commonly used in sound recording and reproduction, broadcasting, live sound reinforcement and some instrument amplifiers. A dedicated electronic...

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Mixing console

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an electronic device for mixing audio signals, used in sound recording and reproduction and sound reinforcement systems. Inputs to the console include microphones...

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Track listing

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In the field of sound recording and reproduction, a track listing (also called a track list or tracklist) is a list created in connection with a recorded...

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Audio signal

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Professional audio Psychoacoustics Sound intensity Sound recording and reproduction Stereophonic sound Surround sound Hodgson, Jay (2010). Understanding...

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Song

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series of distinct and fixed pitches) using patterns of sound and silence. Songs have a structure to them, such as the common ABA form, and are usually made...

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Superimposition

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Superimposition (SI) during sound recording and reproduction (commonly called overdubbing) is the process of adding new sounds over existing without completely...

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Imaging

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imaging, a method of shift-and-add for astronomical imaging Stereo imaging, an aspect of sound recording and reproduction concerning spatial locations...

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