Tone generator for storing and mixing basic and differential wav

Details Tone generator for storing and mixing basic and differential wav Tone generator for storing and mixing basic and differential wav

1991-11-14

1993-11-02

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84604, 84DIG9, 84629, G10H 500, G10H 112, H03H 701

Patent

active

052585743

ABSTRACT:
A tone generator comprises a basic wave memory for storing a first basic wave data of a musical tone signal, a differential wave memory for storing differential wave data between the first basic wave data and a second basic wave data which is different form the first basic wave data, and mixing device for mixing the first basic wave data and the differential wave data. The musical tone signal is produced by using the mixing device which mixes the basic wave data and the differential wave data without using directly stored sampling data memory. Further a multiplier for multiplying said differential wave data by random factors is provided, the random factors being distributed with normalized probability, resulting in that wave data not only varying tone color at random, but also resembling as a whole the basic wave tone color can be obtained.

REFERENCES:
patent: 4181059 (1980-01-01), Weber
patent: 4536853 (1985-08-01), Kawamoto et al.
patent: 5233352 (1991-07-01), Kellogg et al.

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