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Selective Audio Source Enhancement

  • US 20150117649A1
  • Filed: 10/06/2014
  • Published: 04/30/2015
  • Est. Priority Date: 10/31/2013
  • Status: Active Grant
First Claim
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1. A selective audio source enhancement system comprising:

  • a system processor and a system memory, the system memory including;

    a pre-processing unit controlled by the system processor to receive audio data including a target audio signal, and to perform sub-band domain decomposition of the audio data to generate a plurality of buffered outputs;

    a target source detection unit controlled by the system processor to receive the plurality of buffered outputs, and to generate a target presence probability corresponding to the target audio signal;

    a spatial filter estimation unit controlled by the system processor to receive the target presence probability, transform frames buffered in each sub-band into a higher resolution frequency-domain, and update the spatial filters in the higher resolution frequency-domaina spectral filtering unit controlled by the system processor to retrieve a multichannel image of the target audio signal and noise signals associated with the target audio signal;

    an audio synthesis unit controlled by the system processor to extract an enhanced mono signal corresponding to the target audio signal from the multichannel image.

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