Musical tone synthesizing apparatus for synthesizing a muscial t

Details Musical tone synthesizing apparatus for synthesizing a muscial t Musical tone synthesizing apparatus for synthesizing a muscial t

1990-11-28

1994-03-01

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84625, 84660, 84DIG10, 84DIG26, G10H 112

Patent

active

052909697

ABSTRACT:
A musical tone synthesizing apparatus generates musical tones by simulating the tone generation construction of a plucked-stringed instrument or percussion type stringed instrument. The apparatus has a plurality of closed loop circuits which simulate each tone generating element of the instrument, an excitation circuit which creates an excitation signal corresponding to the excitation given to the plurality of tone generating elements in response to the operation of a tone generating operator or the operational information of the tone generating operator, and a memory which stores a non-linear relation between the tone generating elements and the tone generating operator such as a hammer. The excitation signal is supplied to each of the closed loop circuits and circulates around each closed loop circuit and is delayed by means of a delay circuit having delay interval, and is fed back into the excitation circuit as the state of the tone generating elements. By varying the delay time of each delay circuit, the beat between the musical tones taken out from each closed loop circuit can be generated.

REFERENCES:
patent: 4130043 (1978-12-01), Niimi
patent: 4475229 (1984-10-01), Frese
patent: 4984276 (1991-01-01), Smith
"The Sound Production Mechanism of the Piano Using a Digital Filter by Computer Simulation", 13th International Congress on Acoustics, Isao Nakamura, et al., 1989, pp. 65-68.

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