Music – Instruments – Electrical musical tone generation
Patent
1990-03-12
1992-04-14
Witkowski, Stanley J.
Music
Instruments
Electrical musical tone generation
84663, G10H 1057, G10H 108
Patent
active
051037114
ABSTRACT:
A carrier signal generating unit generates a carrier signal. A modulation signal generating unit generates a modulation signal. A mixing controlling unit controls, in mixing the modulation signal with the carrier signal, a mixing ratio of the modulation signal to the carrier signal and outputs a mixed signal in which the modulation signal and the carrier signal are mixed in the controlled mixing ratio. A waveform outputting unit has a predetermined functional relation between its input and output and receives the mixed signal from the mixing controlling unit to provide a modulated musical sound waveform. In this case, the carrier signal and the modulation signal are set such that a desired musical sound waveform is obtained from the waveform outputting unit when the mixing ratio of the modulation signal to the carrier signal is controlled by the mixing controlling unit to a predetermined mixing ratio. And the present invention provides a method of setting the carrier signal and the modulation signal.
REFERENCES:
patent: 4018121 (1977-04-01), Chowning
patent: 4643066 (1987-02-01), Oya
patent: 4748888 (1988-06-01), Oya
Casio Computer Co. Ltd.
Witkowski Stanley J.
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