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Method and device for low delay processing

  • US 8,385,864 B2
  • Filed: 11/23/2006
  • Issued: 02/26/2013
  • Est. Priority Date: 02/21/2006
  • Status: Active Grant
First Claim
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1. A method of adaptively processing an input signal, the method comprising:

  • passing the input signal through an adaptive warped time domain filter to produce an output signal;

    taking at least one of the input signal and the output signal as an analysis signal;

    transforming the analysis signal into a warped frequency domain to produce a transformed analysis signal;

    analyzing the transformed analysis signal to produce a plurality of desired gains each corresponding to a respective warped frequency domain sub-band;

    synthesising a minimum phase warped time domain filter characteristic which approaches the desired gains; and

    updating the adaptive warped filter with the synthesised filter characteristic.

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