Musical tone synthesizing apparatus

Details Musical tone synthesizing apparatus Musical tone synthesizing apparatus

1990-12-20

1993-08-31

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84624, 84625, 84659, 84660, 84661, 84DIG9, 84DIG10, G10H 102, G10H 502

Patent

active

052411273

ABSTRACT:
The musical tone synthesizing apparatus simulating the musical tones of a natural musical instrument such as a piano. The apparatus contains a closed-loop circuit for simulating the vibration mechanism of the strings and a excitation circuit for generating excitation signals to the closed-loop circuit, so that the excitation circuit simulates the hammer striking the string. The apparatus also contains a scaling coefficient generating circuit for generating and supplying scaling coefficients to the excitation circuit, where the scaling coefficients represent the influence rate corresponding to the influence to be applied to the hammer by the string. In the excitation circuit, the excitation signals are multiplied by the scaling coefficients so that a slight difference of tone color is applied to the excitation signals with respect to tone pitch (or each key). For example, the scaling coefficient for comparatively lower tone pitch is set at a comparatively small value, because the hammer for lower tone pitch has relatively rounder shape and larger mass, and the felt thereof is formed relatively thicker, while the scaling coefficients for comparatively higher tone pitch is set at a comparatively large value. For this reason, the musical tone synthesizing apparatus generates a musical tone of which tone color is slightly different with respect to each tone pitch.

REFERENCES:
patent: 4224856 (1980-09-01), Ando et al.
patent: 4893538 (1990-01-01), Masaki et al.
patent: 4957032 (1990-09-01), Hirano et al.
patent: 4984276 (1991-01-01), Smith

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