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Audio feedback suppressor

  • US 4,449,237 A
  • Filed: 04/14/1982
  • Issued: 05/15/1984
  • Est. Priority Date: 04/14/1982
  • Status: Expired due to Fees
First Claim
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1. Apparatus for minimizing feedback to an acoustic to electric signal transducer of an acoustic signal derived from an electric to acoustic transducer comprising means responsive to an electric input signal derived from the acoustic to electric transducer for randomly shifting the phase of the electric input signal by an amount independent of any characteristic of the input signal to derive an electric audio signal having a phase randomly shifted relative to the phase of the input signal, and means responsive to the phase shifted electric audio signal for supplying the phase shifted electric audio signal to the electric to acoustic transducer.

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