Frequency modulator for an electronic musical instrument

Details Frequency modulator for an electronic musical instrument Frequency modulator for an electronic musical instrument

1982-12-06

1984-06-12

Isen, Forester W.

Music

Instruments

84 124, 84 101, G10H 106

Patent

active

044534418

ABSTRACT:
A keyboard operated electronic musical instrument is disclosed which has a number of tone generators that are assigned to actuated keyswitches. A tone generation computation means is implemented using a combination of an even symmetric function and an odd symmetric function. One of these functions is scaled in magnitude in response to a modulation control signal. The scaled and unscaled functions are combined to produce a musical waveshape which is frequency modulated by changes in the level of the modulation control signal.

REFERENCES:
patent: 4253367 (1981-03-01), Hiyoshi et al.

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