Musical tone synthesizing apparatus having smoothly varying tone

Details Musical tone synthesizing apparatus having smoothly varying tone Musical tone synthesizing apparatus having smoothly varying tone

1992-02-19

1994-10-25

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84627, 84660, 84661, 84663, 84DIG9, 84DIG10, G10H 1057, G10H 108, G10H 112

Patent

active

053591461

ABSTRACT:
A musical tone synthesizing apparatus provides a time-varying signal processing circuit the transfer function of which gradually varies over time in order to gradually vary over time the tone color of a synthesized musical tone. A number of time-varying signal processing circuits are presented. An interpolation-type-time-varying signal processing circuit is provided with interpolators for interpolating control parameters generated based on a desired musical tone, a signal processing circuit carrying out a signal operation based on the interpolated control parameters on an input signal incomming thereto. A mixing-type or distribution-type time-varying signal processing circuit is provided with a plurality of signal processing circuits for carrying out signal operations based on control parameters on input signals, and with a mixer which mixes the output signals of the signal processing circuits in such a way that the mixing ratio gradually varies over time or with a distribution circuit which distributes an input signal to the signal processing circuits in such a way that the distribution ratio gradually varies over time.

REFERENCES:
patent: 4785706 (1988-11-01), Toshifumi
patent: 4907484 (1990-03-01), Suzuki et al.
patent: 4984276 (1991-01-01), Smith
patent: 5131310 (1992-07-01), Kunimoto

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