Waveform generating apparatus for an electronic musical instrume

Details Waveform generating apparatus for an electronic musical instrume Waveform generating apparatus for an electronic musical instrume

1989-04-03

1991-05-28

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84736, 84DIG9, G10H 112, G10H 314, G10H 700

Patent

active

050184296

ABSTRACT:
Waveform data is read out from a memory which stores the waveform data at a rate corresponding to a designated pitch. The readout data is supplied to digital filters, and two or more different filtering operations are executed in the digital filters. Two or more waveform data obtained as a filtering result are synthesized at a rate determined in response to a breath input signal output from a breath sensor, and the synthesized data is output as a musical tone waveform signal. The filter performs the filtering operation while a cut-off frequency is changed in response to the breath input signal.

REFERENCES:
patent: 3767833 (1973-10-01), Noble et al.
patent: 3902396 (1975-09-01), Hiyoshi
patent: 4023455 (1977-05-01), Peterson
patent: 4106384 (1978-08-01), Whittington et al.
patent: 4738179 (1988-04-01), Suzuki

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