Music – Instruments – Electrical musical tone generation
Patent
1990-05-08
1992-06-02
Witkowski, Stanley J.
Music
Instruments
Electrical musical tone generation
84661, 84DIG9, 84DIG10, G10H 108, G10H 112
Patent
active
051177293
ABSTRACT:
A musical tone waveform signal generating apparatus is used to generate the waveform signal full of variety which simulates the sound waveform of wind instrument. This apparatus provides a loop including first and second signal lines through which the waveform signal is circulated. Both of first and second signal lines are connected to a conversion portion which receives the waveform signal from the second signal line and a musical tone control signal which is used to control a musical parameter of a musical tone to be generated. The conversion portion effects the predetermined non-linear conversion on the waveform signal in response to the musical tone control signal so that a converted waveform signal to be obtained from the conversion portion is to be outputted to the first signal line. A transmission portion to which both of first and second signal lines are connected transmits the waveform signal from the first signal line to the second signal line and delays the waveform signal by a delay time corresponding to a pitch of the musical tone to be generated. Further, a signal loop portion inserted between the conversion portion and transmission portion mixes the waveform signals on first and second signal lines by transmitting the waveform signal on one of first and second signal lines to the other of first and second signal lines.
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"On the oscillations of musical instruments", J. Acoust. Soc. Am., M. E. McIntyre, et al., Nov. 1983, pp. 1324-1345.
Witkowski Stanley J.
Yamaha Corporation
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