Tone signal synthesizer with touch control

Details Tone signal synthesizer with touch control Tone signal synthesizer with touch control

1991-07-30

1994-05-17

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84624, 84661, 84DIG9, 84DIG1, G10H 700

Patent

active

053130138

ABSTRACT:
A loop circuit including a delay element and an all-pass filter circulates a tone signal. A driving waveform is applied to the loop circuit. The delay element provides a delay time corresponding to the pitch of the circulating tone signal and the all-pass filter is capable of changing the phase of the tone signal corresponding to its frequency. Thus, the resulting musical tone can be controlled in accordance with touch, thereby enabling the simulation of vibration of pitch and the generation of non-harmonic components caused by touch in a natural musical instrument.

REFERENCES:
patent: 4419897 (1983-12-01), Matsuoka
patent: 4703680 (1987-11-01), Wachi et al.
patent: 4731835 (1988-03-01), Futamase et al.
patent: 4907484 (1990-03-01), Suzuki et al.
patent: 4932303 (1990-06-01), Kimpara
patent: 4960030 (1990-10-01), Fujimori
patent: 4998457 (1991-03-01), Suzuki et al.
patent: 5010801 (1991-04-01), Sakashita
patent: 5036541 (1991-07-01), Kato
patent: 5117729 (1992-06-01), Kunimoto

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