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Auto-tuning of an acoustic echo cancellar

  • US 10,375,251 B2
  • Filed: 06/26/2017
  • Issued: 08/06/2019
  • Est. Priority Date: 04/02/2014
  • Status: Active Grant
First Claim
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1. An attenuation unit for controlling feedback to an adaptive filter, the adaptive filter being configured to estimate an echo of a far-end signal that is in a microphone signal, and the attenuation unit being configured to:

  • receive a first microphone signal and a first far-end signal;

    selectively attenuate the first microphone signal and selectively attenuate the first far-end signal so as to attenuate at least one of the first microphone signal and the first far-end signal; and

    output a second microphone signal and a second far-end signal to the adaptive filter.

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