Waveguide type musical tone synthesizing apparatus

Details Waveguide type musical tone synthesizing apparatus Waveguide type musical tone synthesizing apparatus

1990-04-19

1993-09-28

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84625, 84630, 84DIG9, 84DIG10, 84DIG26, G10H 500

Patent

active

052488446

ABSTRACT:
A musical tone synthesizing apparatus which synthesizes a musical tone signal in response to the wind instrument, brass instrument and the like provides an excitation circuit and a resonance circuit. The excitation circuit simulates the operations of the reed, mouth-piece and the like, while the resonance circuit which operates as the bi-directional transmission path simulates the resonance tube. The excitation signal generated from the excitation circuit is transmitted through the resonance circuit consisting of delay circuits and junction circuits. Thereafter, the transmitted signal is reflected by the terminal portion, and the reflected signal is transmitted through the resonance circuit and then fed back to the excitation circuit. Thus, the excitation signal is circulated in the loop consisting of the excitation circuit and resonance circuit. Based on the signal picked up from this loop, it is possible to obtain the synthesized musical tone signal which simulates the wind instrument tone and the like.

REFERENCES:
patent: 4416180 (1983-11-01), Ichigaya
patent: 4475229 (1984-10-01), Frese
patent: 4622877 (1986-11-01), Strong
patent: 4633500 (1986-12-01), Yamada et al.
patent: 4984276 (1991-01-01), Smith
"Modeling Piano Sounds Using Waveguide Digital Filtering Techniques" Garnett, Guy E., ICMC Proceedings 1987, pp. 89-95.

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