Formant tone generating apparatus for an electronic musical inst

Details Formant tone generating apparatus for an electronic musical inst Formant tone generating apparatus for an electronic musical inst

1990-03-27

1992-08-18

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84659, G10H 106, G10H 700

Patent

active

051389274

ABSTRACT:
A formant tone generating apparatus provides n (where n=1, 2, . . . ) systems each capable of generating a pitch control signal by a timing of which period is n times longer than a fundamental pitch period of a musical tone including a formant tone to be generated. Then, a periodic function such as a sinewave function having a formant center frequency is modulated by use of a window function under control of the pitch control signal, so that a modulated signal is formed with respect to each system. Such modulated signals are synthesized together with respect to one or more systems, so that a synthesized signal is obtained. Based on the synthesized signal, the formant tone can be generated without forming unnecessary spectrum.

REFERENCES:
patent: Re32862 (1989-02-01), Wachi
patent: 4200021 (1980-04-01), Chibana
patent: 4351219 (1982-09-01), Bass
patent: 4422362 (1983-12-01), Chibana
patent: 4597318 (1986-07-01), Nikaido et al.

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