Musical tone waveform signal generating apparatus simulating a w

Music – Instruments – Electrical musical tone generation

Patent

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Details

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.

REFERENCES:
patent: 4475229 (1984-10-01), Frese
patent: 4548119 (1985-10-01), Wachi et al.
patent: 4554858 (1985-11-01), Wachi et al.
patent: 4736663 (1988-04-01), Wawrzynek et al.
patent: 4815354 (1989-03-01), Kunimoto
patent: 4829463 (1989-05-01), Kakishita et al.
patent: 4841828 (1989-06-01), Suzuki
patent: 4909121 (1990-03-01), Usa et al.
"On the oscillations of musical instruments", J. Acoust. Soc. Am., M. E. McIntyre, et al., Nov. 1983, pp. 1324-1345.

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