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ADAPTIVE ACTIVE NOISE CANCELING FOR HANDSET

  • US 20120316872A1
  • Filed: 06/07/2011
  • Published: 12/13/2012
  • Est. Priority Date: 06/07/2011
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • a first input to receive a first signal from a feedforward microphone;

    a second input to receive a second signal from an error microphone;

    a controller coupled to the inputs, the controller configured to adaptively generate an anti-noise signal according to the received signals, wherein the controller derives a profile of the anti-noise signal from the first signal and adjusts a magnitude of the anti-noise signal based on both first and second signals; and

    an output to transmit the anti-noise signal to a speaker.

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