Device for producing sounds, which can be coupled to a musical i

Details Device for producing sounds, which can be coupled to a musical i Device for producing sounds, which can be coupled to a musical i

1978-03-14

1980-05-13

Truhe, J. V.

Music

Instruments

84DIG11, 84 127, 84 103, G10H 506, G10H 510

Patent

active

042022371

ABSTRACT:
The device of the invention extracts a fundamental frequency from signals coming from a played musical instrument. From this is synthesized a waveform with the same fundamental frequency which can be given an arbitrary form, so that an audical impression of e.g. a violin, a trumpet or a guitar can be given to sound produced by the waveform. The waveform is produced by making a pulse train with frequency n times the fumdamental frequency, leading the pulse train to a counter activating cyclically and sequentially n different outputs. The outputs are summed with different and adjustable weights, and the waveform is determined by adjusting the n weights. The number n can be any number. An embodiment is shown with n=16.

REFERENCES:
patent: 3215860 (1965-11-01), Neumann
patent: 3429976 (1969-02-01), Tomcik
patent: 3539701 (1970-11-01), Milde
patent: 3657657 (1972-04-01), Jefferson
patent: 3986426 (1976-10-01), Faulhaber
patent: 4038895 (1977-08-01), Clement
patent: 4061909 (1977-12-01), Bryant

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