Waveshape memory type electronic musical instrument

Details Waveshape memory type electronic musical instrument Waveshape memory type electronic musical instrument

1977-03-02

1979-01-09

Witkowski, Stanley J.

Music

Instruments

84 122, 84 124, 84 126, G10H 102, G10H 500

Patent

active

041332423

ABSTRACT:
A waveshape memory type electronic musical instrument produces a tone signal by cyclically reading wave value samples of a tone waveshape stored in a waveshape memory. The electronic musical instrument comprises a function generator for generating a periodic function signal which includes the mathematical product of an amplitude term varying as a function of time and a cyclic term of a selected frequency, and a multiplier for modulating a part of the tone waveshape by the periodic function signal, thereby producing a musical tone signal changing in waveshape as time lapses.

REFERENCES:
patent: 3515792 (1970-06-01), Deutsch
patent: 3823390 (1974-07-01), Tomisawa et al.
patent: 3882751 (1975-05-01), Tomisawa et al.
patent: 3903775 (1975-09-01), Kondo et al.
patent: 3935783 (1976-02-01), Machanian et al.
patent: 3978755 (1976-09-01), Woron
patent: 4018121 (1977-04-01), Chowning
patent: 4033219 (1977-07-01), Deutsch

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