Music – Instruments – Electrical musical tone generation
Patent
1993-04-06
1994-12-27
Witkowski, Stanley J.
Music
Instruments
Electrical musical tone generation
84DIG7, G10H 1053, G10H 118
Patent
active
053767535
ABSTRACT:
A key touch detector, for an electronic musical instrument, that detects key touch states, comprises: a first switch to be closed at a first key displacement position disposed along the line of travel of a depressed key; a second switch to be closed at a second key displacement position disposed along the line of travel of the depressed key; a key depression detector for detecting the closure of the first switch and the closure of the second switch; a touch data computer for computing touch data for the depressed key during a period that begins following the closure of the first switch and ends with the closure of the second switch; and delay circuitry for deferring initiation of touch data computation by the touch data computer until a predetermined time has elapsed following the closure of the first switch.
REFERENCES:
patent: 5229536 (1993-07-01), Kunimoto
patent: 5272274 (1993-12-01), Kimura
Kosugi Taichi
Washiyama Yutaka
Kabushiki Kaisha Kawai Gakki Seisakusho
Witkowski Stanley J.
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