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Systems and methods for distributed adaptive noise cancellation

  • US 10,152,960 B2
  • Filed: 02/25/2016
  • Issued: 12/11/2018
  • Est. Priority Date: 09/22/2015
  • Status: Active Grant
First Claim
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1. An integrated circuit, comprising:

  • an output for providing a signal to a transducer including both source audio for playback to a listener and an anti-noise signal for countering the effects of ambient audio sounds in an acoustic output of the transducer;

    a microphone input for receiving a microphone signal indicative of ambient audio sounds at the transducer;

    a link control input for receiving link control information of a communications link coupling the integrated circuit to one or more of the transducer and a microphone for generating the microphone signal, wherein the link control information includes a link quality metric of the communications link; and

    a processing circuit comprising an adaptive filter having a response that generates the anti-noise signal in conformity with the microphone signal to minimize the ambient audio sounds at the acoustic output of the transducer, wherein the processing circuit modifies generation of the anti-noise signal by modifying adaptation of the adaptive filter responsive to the link quality metric.

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