Pitch control
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A variable speed pitch control (or vari-speed) is a control on an audio device such as a turntable, tape recorder, or CD player that allows the operator to deviate from a standard speed (such as 33, 45 or even 78 rpm on a turntable), resulting in adjustments in pitch.[1] 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. A typical DJ deck allows the pitch to be increased or reduced by up to 8%, which is achieved by increasing or reducing the speed at which the platter rotates.
Turntable or CD playing speed may be changed for
Vari-speed in consumer cassette decks
Superscope, Inc. of Sun Valley added vari-speed as a feature of portable cassette decks in 1975. The C-104 and C-105 models incorporated this feature.[2][3]
Superscope trademarked the name Vari-Speed in 1974. The trademark category was Computer & Software Products & Electrical & Scientific Products. The trademark goods and Services use was Magnetic tape recorders and reproducers. The trademark expired in 1995.[4][5]
DJ pitch usage
For
Reset button
On Technics SL-1200 turntables, pressing the Reset button[6] returns the pitch to a fixed preset value of +/−0% regardless of the pitch control position.[7]
See also
References
- ^ "Technics SL-1210MK7R Direct Drive Turntable System Instruction Manual". 18 April 2022.
- ^ Ferric-oxide Archeology,6. Superscopes and varispeed
- ^ Marantz Far East In Name Change; Adds Superscope, Billboard Magazine, December 7, 1974, Page 40
- ^ Vari-Speed trademark 73025543
- ^ Musical Instruments & Musical Recorder
- ^ "Technics SL-1210MK7R Direct Drive Turntable System Instruction Manual". 18 April 2022.
- ^ "SL-1200 ‒ Heritage - Technics".
External links