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Method and device for audio signal processing

  • US 10,455,346 B2
  • Filed: 04/02/2018
  • Issued: 10/22/2019
  • Est. Priority Date: 09/17/2013
  • Status: Active Grant
First Claim
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1. A method for processing an audio signal, the method comprising:

  • receiving an input audio signal including a plurality of subband signals, wherein the plurality of subband signals include a first subband group containing only low-frequency subband signals determined based on a predetermined frequency band and a second subband group containing only high-frequency subband signals determined based on the predetermined frequency band;

    performing a first filtering on each subband signal of the first subband group; and

    performing a second filtering on each subband signal of the second subband group, wherein the second filtering is distinct from the first filtering,wherein the first filtering is performed by using a first parameter set including one or more parameters for a corresponding subband and the second filtering is performed by using a second parameter set including one or more parameters for a corresponding subband,wherein characteristics of the first parameter set is different from characteristics of the second parameter set,wherein the second parameter set includes a set of gain and delay for the corresponding subband, andwherein the second filtering comprises performing one-tap-delay line filtering on each subband signal of the second subband group by using the set of gain and delay for the corresponding subband.

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