Modulators – Amplitude modulator – Nonlinear device controlled by modulating signal
Patent
1975-05-05
1976-08-03
Grimm, Siegfried H.
Modulators
Amplitude modulator
Nonlinear device controlled by modulating signal
84 125, 332 31T, G10H 104, H03C 152
Patent
active
039732231
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.
REFERENCES:
patent: 3493669 (1970-02-01), Elbrecht et al.
patent: 3510567 (1970-05-01), Fisher
Grimm Siegfried H.
Nippon Gakki Seizo Kabushiki Kaisha
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