Apparatus for appoximating envelope data and for extracting enve

Details Apparatus for appoximating envelope data and for extracting enve Apparatus for appoximating envelope data and for extracting enve

1994-04-25

1996-08-20

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84663, G10H 1057

Patent

active

055480802

ABSTRACT:
An envelope extracting circuit extracts an envelope from the waveform sampled by a musical tone sampling circuit, and stores the envelope data into a memory. An envelope approximating circuit approximates the envelope data as stored in the memory by the function data such as linear or exponential function data. The original envelope is approximated by a limited number of function waveforms whose characteristics change at switching points.

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