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Hierarchical encoding/decoding device

  • US 8,374,853 B2
  • Filed: 07/07/2006
  • Issued: 02/12/2013
  • Est. Priority Date: 07/13/2005
  • Status: Expired due to Fees
First Claim
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1. A system for coding a hierarchical audio signal, comprising, at least, a core coding module using parametric coding by analysis by synthesis in a first frequency band, a band extension coding module for widening said first frequency band into a second frequency band, or wideband, wherein said system also comprises a wideband audio coding quality enhancement module based on transform coding using a spectral parameter obtained from said band extension coding module.

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