Frequency conversion system of tone signal produced by electrica

Details Frequency conversion system of tone signal produced by electrica Frequency conversion system of tone signal produced by electrica

1979-03-20

1980-11-18

Truhe, J. V.

Music

Instruments

84 101, 84 12, 84445, 332 2, 332 31R, 331 37, G10H 106, H03C 100, H03B 2100

Patent

active

042338743

ABSTRACT:
An octave conversion system of the fundamental frequency of an audible tone signal produced by electrically picking up mechanical vibration of a musical instrument in which the audible tone signal and an audible modulation signal having a frequency in a preselected relation to the fundamental frequency of the tone signal are applied to a multiplier which is preferably constituted by a voltage-controlled amplifier. When the modulation signal has a frequency half that of the tone signal, the tone signal is one-octave down-converted, while, when the modulation frequency is equal to the tone signal frequency the tone signal is one-octave up-converted. With this frequency conversion system the fundamental wave component of the octave-converted tone signal has the same envelope as that of the original tone signal. This frequency conversion system is advantageous in attaining small size versions of electric musical instruments and extension of inherent compasses of electric musical instruments.

REFERENCES:
patent: Re26533 (1969-03-01), Cookerly et al.
patent: 2773179 (1956-12-01), Makow
patent: 3000252 (1961-09-01), Wayne
patent: 3006228 (1961-10-01), White
patent: 3320546 (1967-05-01), Allen et al.
patent: 3429976 (1969-02-01), Tomcik
patent: 3532799 (1970-10-01), Kameoka et al.
patent: 3605023 (1971-09-01), Kline
patent: 3637913 (1972-01-01), Evans
patent: 3651242 (1972-03-01), Evans
patent: 3711617 (1973-01-01), Evans
patent: 3716647 (1973-02-01), Kameoka
patent: 3762265 (1973-10-01), Adachi
patent: 3857997 (1974-12-01), Toonder
patent: 4019419 (1977-04-01), Yoshikawa et al.
patent: 4105949 (1978-08-01), Hardin
patent: 4160402 (1979-07-01), Schwartz
patent: 4168645 (1979-09-01), Squire et al.

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