Music – Instruments
Patent
1976-04-07
1977-12-27
Witkowski, Stanley J.
Music
Instruments
G10H 102
Patent
active
040647781
ABSTRACT:
A carrier wave having a sub-audible frequency is modulated in amplitude by a modulating wave of a tone signal having an audible frequency, which produces a resultant modulated output signal having first and second side band components respectively deviated above and below the tone signal frequency by a deviation amount equal to the carrier frequency. The frequency of the carrier wave is much lower than that of the modulating wave. This frequency deviation technique is utilized to provide a tremolo effect or a chorus effect in an electronic musical instrument, wherein the frequency-deviated signal is admixed with the original non-deviated signal.
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Alley et al., Electronic Engineering, Second Edition, John Wiley & Sons, Inc., Copyright 1966, pp. 527-529.
Nippon Gakki Seizo Kabushiki Kaisha
Witkowski Stanley J.
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