Pitch control
From Wikipedia, the free encyclopedia
A variable speed pitch control (or vari-speed) is a control on an audio device such as a turntable, reel-to-reel, tape deck or CD player that allows the operator to deviate from a standard speed (such as 33⅓ or 45 rpm in the case of a turntable). The latter term "vari-speed" is more commonly used for tape decks, particularly in the UK. Analog pitch controls vary the voltage being used by the playback device; digital controls use digital signal processing to change the playback speed or pitch.
Turntable or CD playing speed may be changed for beatmatching and other DJ techniques, while pitch shift using a pitch control has myriad uses in sound recording.
