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Audio signal processing apparatus, audio signal processing method, and audio signal processing program

  • US 20070189551A1
  • Filed: 01/25/2007
  • Published: 08/16/2007
  • Est. Priority Date: 01/26/2006
  • Status: Active Grant
First Claim
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1. An audio signal processing apparatus comprising:

  • division means for dividing at least two or more channel audio signals into components in a plurality of frequency bands;

    phase difference calculation means for calculating a phase difference between said two or more channel audio signals at each said frequency band;

    level ratio calculation means for calculating a level ratio between said two or more channel audio signals at each said frequency band;

    sound image localization estimation means for estimating, based on said level ratio or said phase difference, sound image localization at each said frequency band; and

    control means for controlling said estimated sound image localization at each said frequency band by adjusting said level ratio or said phase difference.

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