Electronic musical instrument of the harmonic synthesis type

Details Electronic musical instrument of the harmonic synthesis type Electronic musical instrument of the harmonic synthesis type

1979-04-20

1981-03-17

Witkowski, S. J.

Music

Instruments

84 112, 84 122, G10H 106

Patent

active

042560047

ABSTRACT:
An electronic musical instrument is of a harmonic synthesis type and is provided with an order number memory device which stores a plurality of order numbers of the harmonic components necessary to form respective tone colors, an amplitude coefficient memory device which stores a plurality of sets of amplitude coefficients for the respective harmonic components corresponding to the respective order of numbers stored in the order number memory device, and a tone color selector which controls the order number memory device and the amplitude coefficient memory device, when a certain tone color is selected, for causing the respective memory devices to produce the order numbers and the amplitude coefficients of a set corresponding to the selected tone color. According to the order numbers, respective harmonic component waves of a certain amplitude are produced and are multiplied with the amplitude coefficients and the multiplication products thus obtained are combined to synthesize musical tones having the selected tone color.
By providing only necessary order numbers and coefficients, the memory size becomes small and the synthesizing speed becomes high.

REFERENCES:
patent: 3809786 (1974-05-01), Deutsch
patent: 3913442 (1975-10-01), Deutsch
patent: 3956960 (1976-05-01), Deutsch
patent: 3992971 (1976-11-01), Chibana et al.
patent: 4026179 (1977-05-01), Futamase
patent: 4103582 (1978-08-01), Chibana
patent: 4108040 (1978-08-01), Chibana et al.
patent: 4114498 (1978-09-01), Chibana et al.
patent: 4133242 (1979-01-01), Nagal et al.
patent: 4150600 (1979-04-01), Deutsch

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