Electronic musical instrument with tone generation by recursive

Details Electronic musical instrument with tone generation by recursive Electronic musical instrument with tone generation by recursive

1977-01-13

1978-04-18

Schaefer, Robert K.

Music

Instruments

84 103, 84 111, 84 119, G10H 102, G10F 100

Patent

active

040844722

ABSTRACT:
A digital type electronic musical instrument generates a tone signal consisting of a plurality of time-varying partial tone signals each by recursive calculation. A recursive calculator is of a simplified construction by arranging the amplitude term to be excluded from the recursive calculation and to be multiplied thereafter. A remarkable reduction in the memory units can be accomplished by arranging the pair of initial values for each partial tone function to be equal to each other by the introduction of a phase term into the periodic part of the partial tone function.

REFERENCES:
patent: 4026179 (1977-05-01), Futamase

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