Electronic musical instrument

Details Electronic musical instrument Electronic musical instrument

1982-04-14

1984-07-24

Witkowski, Stanley J.

Music

Instruments

84 122, 84 123, G10H 108, G10H 700

Patent

active

044612001

ABSTRACT:
In an electronic musical instrument which produces a musical sound through calculating means of a discrete Fourier algorithm by controlling harmonic coefficients, the value of a harmonic number, more than one temporally changing effect function values and a constant value are added together in a predetermined ratio; the added value is divided into a plurality of blocks; the blocks are subjected to data conversion using plural kinds of functions arbitrarily designated corresponding to the respective blocks and outputted in combination; and the outputs are each multiplied by each harmonic coefficient, thereby controlling the harmonic coefficients with time.

REFERENCES:
patent: 4215614 (1980-08-01), Chibana
patent: 4256004 (1981-03-01), Takeuchi
patent: 4270430 (1981-06-01), Deutsch
patent: 4273018 (1981-06-01), Deutsch
patent: 4297933 (1981-11-01), Nishimoto
patent: 4385542 (1983-05-01), Deutsch et al.
patent: 4387622 (1983-06-01), Deutsch

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