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Noise reduction circuitry for audio signals

  • US 4,462,048 A
  • Filed: 02/11/1982
  • Issued: 07/24/1984
  • Est. Priority Date: 02/11/1982
  • Status: Expired due to Term
First Claim
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1. Circuitry for compensating defects in an audio signal, which signal is in the form of a carrier modulated by an audio signal, said circuitry comprising:

  • means for delaying said modulated carrier by an integral multiple of carrier cycles;

    means for detecting the occurrence of defects in the modulated carrier and generating control pulses responsive thereto; and

    switch means responsive to said control pulses for substituting the delayed modulated carrier for defects in the nondelayed modulated carrier.

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