In telecommunication and signal processing companding (occasionally called compansion) is a method of mitigating the detrimental effects of a channel with limited dynamic range. The name is a portmanteau of compressing and expanding. The use of companding allows signals with a large dynamic range to be transmitted over facilities that have a small...
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(from the article `telecommunication`) ...being represented by a sequence of eight bits. At the receiving end, the reconstituted signal is expanded to its original range of amplitudes. ...
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the combination of compression and expansion carried out successively on the same signal at two points in a transmission channel
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A type of signal processing in which the signal is compressed on input and expanded back to its original form on output. Digital companding allows a device to achieve a greater apparent dynamic range with fewer bits per sample word.
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Non-linear treatment of an analogue signal to achieve compression of an audio signal in a codec. Lower level signals are converted with more precision than high level signals since human hearing is more sensitive to inaccuracies at lower sound levels.
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Contraction derived from the opposite processes of compression and expansion. Part of the PCM process whereby analog signal values are logically rounded to discrete scale-step values on a nonlinear scale. The decimal step number is then coded in its binary equivalent prior to transmission. The process is reversed at the receiving terminal using ...
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a process in which the dynamic range of a signal is reduced for recording purposes and then expanded to its original value for reproduction or playback.
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