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NON-CAUSAL POSTFILTER

  • US 20100063805A1
  • Filed: 12/14/2007
  • Published: 03/11/2010
  • Est. Priority Date: 03/02/2007
  • Status: Active Grant
First Claim
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1. A decoder arrangement, comprising:

  • a receiver input for parameters of frame-based coded signals;

    a decoder connected to said receiver input, arranged to provide frames of decoded audio signals based on said parameters;

    a postfilter connected to an output of said decoder and arranged to provide an output signal based on said frames of decoded audio signals;

    an output for said output signal;

    wherein at least one of said receiver input and said decoder is arranged to establish a time difference between the occasion when parameters of a first frame is available at said receiver input and the occasion when a decoded audio signal of said first frame is available at said output of said decoder, which time difference corresponds to at least one frame;

    wherein said postfilter is connected to said receiver input; and

    ,wherein said postfilter is arranged to provide a filtering of said frames of decoded audio signals into an output signal in response to said parameters of a respective subsequent frame.

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