Music – Instruments – Electrical musical tone generation
Patent
1991-07-09
1993-10-26
Shoop, Jr., William M.
Music
Instruments
Electrical musical tone generation
84663, G10H 1057
Patent
active
052568318
ABSTRACT:
An envelope waveform generation apparatus comprises an envelope waveform signal generator for forming an envelope waveform signal, a specific position setting member for setting a specific position, a position comparator and a key OFF controller. When a key OFF event is detected, the position comparator compares a position and/or level on the envelope waveform with those of the specific position, and the key OFF controller decays the level of the envelope waveform signal in the shape of a predetermined key OFF waveform, or delays key OFF processing by the envelope waveform signal generator on the basis of the comparison result.
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Ichiki Tetsuji
Kozuki Koichi
Okamura Kazuhisa
Shoop Jr. William M.
Sircus Brian
Yamaha Corporation
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