Autocorrelation tone generator for an electronic musical instrum

Details Autocorrelation tone generator for an electronic musical instrum Autocorrelation tone generator for an electronic musical instrum

1982-11-12

1984-08-14

Witkowski, Stanley J.

Music

Instruments

84 122, G10H 700

Patent

active

044649657

ABSTRACT:
A keyboard operated electronic musical instrument having a number of tone generators which are assigned to actuated keyswitches. A tone selection means is implemented comprising an autocorrelation function generator. A set of harmonic coefficients is created by means of a discrete Fourier-cosine transformation of the autocorrelation function. A computing means transforms the harmonic coefficients to musical tones. The generated musical tones are varied in tone color by selecting the shape of the autocorrelation function. A means is provided to vary the autocorrelation function in a time variant manner in response to a control signal.

REFERENCES:
patent: 4282786 (1981-08-01), Deutsch et al.
patent: 4398442 (1983-08-01), Deutsch

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