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Apparatus for coding of variable bitrate wideband speech and audio signals, and a method thereof

  • US 7,634,402 B2
  • Filed: 10/14/2004
  • Issued: 12/15/2009
  • Est. Priority Date: 11/13/2003
  • Status: Active Grant
First Claim
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1. An apparatus for coding of variable bitrate wideband speech and audio, comprising:

  • a) a speech and audio divider for dividing signals inputted to a CODEC into speech or audio signals;

    b) a narrowband coder for performing narrowband coding when the divided input signals are speech signals;

    c) a bitrate modifier for decreasing a bitrate for coding of a low frequency band and increasing a bitrate for coding of a high frequency band by the amount decreased in the low frequency band when the divided input signals are audio signals; and

    d) a wideband coder for performing coding by the modified bitrate in the bitrate modifier.

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