Tone signal generating apparatus for performing a timbre change

Details Tone signal generating apparatus for performing a timbre change Tone signal generating apparatus for performing a timbre change

1993-12-17

1995-06-27

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84622, 84661, 84DIG9, G10H 112, G10H 702

Patent

active

054281830

ABSTRACT:
A tone signal generating apparatus, including a memory for storing wave data containing frequency components within a full band; a tone generator for reading the wave data from the memory in accordance with key ON/OFF data to generate a tone signal; a velocity generator for generating a velocity value based on key ON/OFF data; a first coefficient processor for producing a first coefficient to control the amplitude in accordance with the velocity value generated by the velocity generator; a first operator for performing an operation on the first coefficient produced by the first coefficient processor and the tone signal generated by the tone generator, a filter for extracting frequency components within a specific band from the tone signal output from the first operator to produce a first tone signal and outputting the first tone signal; a second coefficient processor for producing a second coefficient to control the amplitude in accordance with the velocity value generated by the velocity generator; and a second operator for performing an operation on the second coefficient produced by the second coefficient processor and the tone signal produced by the tone generator to obtain a second tone signal and outputting the second tone signal.

REFERENCES:
patent: 4679480 (1987-07-01), Suzuki

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