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AUDIO PROCESSING DEVICE, AUDIO PROCESSING METHOD, AND RECORDING MEDIUM RECORDING AUDIO PROCESSING PROGRAM

  • US 20140079232A1
  • Filed: 05/18/2012
  • Published: 03/20/2014
  • Est. Priority Date: 05/19/2011
  • Status: Abandoned Application
First Claim
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1. An audio processing device, comprising:

  • first audio output means for outputting first audio based on a first output audio signal,second audio output means for outputting second audio based on a second output audio signal,audio input means for inputting audio and outputting an input audio signal,first artificial linear echo generation means for generating a first artificial linear echo signal estimated to be generated by the first audio travelling to the audio input means from the first output audio signal and outputting it,second artificial linear echo generation means for generating a second artificial linear echo signal estimated to be generated by the second audio travelling to the audio input means from the second output audio signal and outputting it,linear echo suppression means for generating a signal in which a linear echo signal mixed to the input audio signal is suppressed based on the outputs of the first artificial linear echo generation means and the second artificial linear echo generation means and outputting it,non-linear echo estimation means for estimating a non-linear echo signal based on the first artificial linear echo signal and the second artificial linear echo signal, andnon-linear echo suppression means for suppressing the signal outputted by the linear echo suppression means based on the non-linear echo signal estimated by the non-linear echo estimation means.

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