Tone synthesizing system for electronic musical instrument

Details Tone synthesizing system for electronic musical instrument Tone synthesizing system for electronic musical instrument

1982-04-26

1984-08-21

Witkowski, S. J.

Music

Instruments

84 127, G10H 108, G10H 146

Patent

active

044663250

ABSTRACT:
A tone synthesizing system which prevents the dynamic range from becoming unduly wide with an increase in the number of tone tablet switches being selected concurrently in an electronic musical instrument of the type synthesizing a musical sound through the use of a discrete Fourier transfer. In the electronic musical instrument in which, for obtaining a desired musical waveshape, amplitude values at its sample points are computed through the synthesizing system using the discrete Fourier transfer, harmonic coefficients of the tones selected or sine-wave values in accordance with the number of tone tablet switches being simultaneously selected are attenuated at a desired rate to limit a maximum level of an accumulated value of the harmonic coefficients or sine-wave values as predetermined.

REFERENCES:
patent: 3908504 (1975-09-01), Deutsch
patent: 3913442 (1975-10-01), Deutsch
patent: 4085644 (1978-04-01), Deutsch et al.
patent: 4273018 (1981-06-01), Deutsch
patent: 4300432 (1981-11-01), Deutsch
patent: 4331058 (1982-05-01), Deutsch

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