Acoustic tone synthesizer for an electronic musical instrument

Details Acoustic tone synthesizer for an electronic musical instrument Acoustic tone synthesizer for an electronic musical instrument

1981-09-22

1983-05-31

Witkowski, Stanley J.

Music

Instruments

84 122, G10H 108, G10H 700

Patent

active

043855423

ABSTRACT:
In a musical instrument having one or more tone generators in which a plurality of data words corresponding to the amplitudes of points defining the waveform of a musical tone are computed and transferred to a digital-to-analog converter to be converted into musical waveshapes, apparatus is provided for generating tones which are imitative of acoustic signals created by singing or humming. A new tone is obtained by singing into a microphone and actuating a switch. The output waveshapes are generated by implementing a Fourier transform algorithm using a set of harmonic coefficients determined by sampling and processing the signal produced by the microphone.

REFERENCES:
patent: 3591699 (1971-07-01), Cutler
patent: 3651242 (1972-03-01), Evans
patent: 4282790 (1981-08-01), Wachi
patent: 4313360 (1982-02-01), Faulkner

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