Musical tone synthesizing apparatus

Details Musical tone synthesizing apparatus Musical tone synthesizing apparatus

1990-12-11

1996-04-30

Sircus, Brian

Music

Instruments

Electrical musical tone generation

84624, 84625, H03G 300

Patent

active

055127053

ABSTRACT:
A musical tone synthesizing apparatus generates musical tones of acoustic musical instrument which has operator like a hammer, and a vibrating element such as a string or a vibrating plate. The apparatus has a loop circuit which comprises at least two delays of which total delay time of the two delays corresponds to pitch of a musical tone, a propagating circle for simulating the vibrating element, an exciting signal generator which generates signal in accordance with a non-linear relation between the operator and the vibrating element, and a delay controller which controls a ratio of the delay time between the two delays. By varying the ratio, the apparatus realizes the characteristics of the vibration in the vibrating elements of which struck positions by the operator change in accordance with pitch of tones to thereby generates musical tones with fidelity.

REFERENCES:
patent: 4130043 (1978-12-01), Niimi
patent: 4584701 (1986-04-01), Nakama et al.
patent: 4674386 (1987-06-01), Conklin, Jr.
patent: 4893538 (1990-01-01), Masaki et al.
patent: 4984276 (1991-01-01), Smith
Garnett, Guy E. "Modeling Piano Sound using Waveguide Digital Filtering Techniques", 1987 ICMC Proceedings, pp. 89-95.
Nakamura, Isao and Yamaguchi, Junichiro, "Synthesis of Piano Tone By Means of Computer Simulation-Digital Filter Method". . . , Thesis of Japanese Acoustic Society Lectures, p. 515, Apr., 1977.
Nakamura, Isao, "The character of piano tones--Acoustical research on the piano (Part 4), Journal of Japanese Acoustic Society", vol. 38, No. 8, p. 454, 1982.

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