Music – Instruments – Electrical musical tone generation
Patent
1990-01-29
1991-12-03
Shoop, Jr., William M.
Music
Instruments
Electrical musical tone generation
84622, 84604, G10H 700
Patent
active
050691058
ABSTRACT:
Disclosed is a musical tone signal generating apparatus for an electronic musical instrument. When waveforms are switched to change a tone color in correspondence with a change in pitch, waveforms are switched not simultaneously with a change in pitch but when waveform data corresponding to a loop end address is read out, and a peak value of the waveform falls within a predetermined range or a zero-crossing point is detected, thereby smoothly switching waveforms. The pitch is also changed at the above-mentioned timing to prevent generation of an unnecessary tone color upon switching. Furthermore, waveforms are switched by cross-fade control to more smoothly switch output waveforms.
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Iba Akio
Tsutsumi Kenichi
Casio Computer Co. Ltd.
Kim Helen
Shoop Jr. William M.
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