Musical tone synthesizing apparatus with time function excitatio

Details Musical tone synthesizing apparatus with time function excitatio Musical tone synthesizing apparatus with time function excitatio

1990-12-26

1993-02-16

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84DIG26, 84630, 84623, 84622, G10H 507, G10D 0000, H03G 300

Patent

active

051873141

ABSTRACT:
A musical tone synthesizing apparatus generates musical tones by simulating the tone generation construction of a plucked-stringed instrument or string-striking type stringed instrument. The apparatus has a closed-loop circuit which simulate a tone generating element of the instrument, an excitation circuit which creates an excitation signal corresponding to the excitation given to the tone generating element in response to the time function. The time function is set in response to operational information of the tone generating operator. The excitation signal is supplied to the closed-loop circuit and circulates around closed-loop circuit and is delayed by a delay circuit having delay interval, and is fed back into the excitation circuit as the state of the tone generating element. By displacing the excitation signal within the predetermined range of time function, the digital computation may not be in the overflow state when computing the relative displacement between the tone generating element and the tone generating operator, and thus control stability of the excitation circuit can be obtained.

REFERENCES:
patent: 4982433 (1991-01-01), Yajima et al.
patent: 4984276 (1991-01-01), Smith
patent: 5029509 (1991-07-01), Serra et al.
patent: 5113743 (1992-05-01), Higashi
patent: 5131310 (1992-07-01), Kunimoto

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