Detecting and reducing feedback

  • US 10,540,983 B2
  • Filed: 06/01/2017
  • Issued: 01/21/2020
  • Est. Priority Date: 06/01/2017
  • Status: Active Grant
First Claim
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1. A computer-implemented method to detect and reduce feedback in a signal, the method comprising:

  • obtaining an audio signal;

    separating the audio signal into a plurality of frequency bands;

    selecting a first frequency band of the plurality of frequency bands;

    obtaining a magnitude threshold and a duration threshold;

    in response to the first frequency band having a magnitude greater than the magnitude threshold for a duration longer than the duration threshold, attenuating the first frequency band an amount of the attenuation determined based on a difference between the magnitude of the first frequency band and the magnitude threshold; and

    combining the plurality of frequency bands, including the attenuated first frequency band, to produce an output audio signal.

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