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Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks

  • US 8,346,566 B2
  • Filed: 08/31/2010
  • Issued: 01/01/2013
  • Est. Priority Date: 09/18/2002
  • Status: Expired due to Term
First Claim
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1. Apparatus for reducing or eliminating intermodulation introduced by aliasing in a real-valued filterbank used for spectral envelope adjustment, comprising:

  • means for analysing an input signal to obtain information; and

    means for using the obtained information to restrain envelope adjustment capabilities of the real-valued filterbank by grouping gain-values of adjacent channels.

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