System for electronically simulating radiation effects produced by a rotary loudspeaker
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United States of America Patent
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Dec 29, 1981
Grant Date -
N/A
app pub date -
Dec 26, 1979
filing date -
Dec 26, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for electronically simulating vibrato and tremulant effects and the radiation effects produced by a rotary loudspeaker with the aid of two loudspeakers, in which a musical tone signal is applied to a variable delay device associated with one of the loudspeakers. The frequency modulated signal produced by the variable delay device is also subjected to amplitude modulation, controlled in synchronism with the variable delay device, and the resulting composite signal applied to the other loudspeaker. Additionally, the high frequency components of the frequency modulated signal from the variable delay device are summed, in and out of phase relationship, with the composite amplitude modulated signal to simulate the effect of a rotating high frequency horn radiator.
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