Musical tone waveform signal forming apparatus with pitch and to

Details Musical tone waveform signal forming apparatus with pitch and to Musical tone waveform signal forming apparatus with pitch and to

1991-02-19

1993-06-29

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84DIG9, 84DIG10, G10H 112, G10H 114

Patent

active

052236560

ABSTRACT:
A musical tone waveform signal forming apparatus comprises a delay loop circuit, a filter circuit a drive signal generation circuit and a modulation control circuit. The drive signal generation circuit inputs a drive signal to the delay loop circuit so that a musical tone is formed in the delay loop circuit. The filter circuit filters the musical tone. The modulation control circuit changes the delay length of the delay loop circuit and the characteristics of the filter circuit thereby adding a modulation effect on the musical tone to be generated.

REFERENCES:
patent: 4130043 (1978-12-01), Niimi
patent: 4267761 (1981-05-01), Deutsch
patent: 4646611 (1987-03-01), Nagashima et al.
patent: 4706291 (1987-11-01), Kakubo et al.
patent: 4984276 (1991-01-01), Smith
patent: 5036541 (1991-07-01), Kato

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