Audio feedback suppressor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
May 15, 1984
Grant Date -
N/A
app pub date -
Apr 14, 1982
filing date -
Apr 14, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Positive feedback of an acoustic signal from a loud speaker to a microphone of a loud speaker system, i.e., howling, is prevented by randomly phase shifting an electric signal containing audio information supplied to the speaker. The random phase shifting is provided by variably delaying the electric signal in a serial analog register having a shift rate determined by an output signal of a pseudo random code generator.
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