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Speech coding apparatus having amplitude information set to correspond with position information

  • US 5,826,226 A
  • Filed: 09/27/1996
  • Issued: 10/20/1998
  • Est. Priority Date: 09/27/1995
  • Status: Expired due to Term
First Claim
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1. A speech coding apparatus for calculating a spectral parameter from a speech signal inputted thereto, quantizing an excitation signal of the speech signal using the spectral parameter and outputting the quantized excitation signal, comprising:

  • an excitation quantization section for quantizing the excitation signal using a plurality of pulses, each pulse being defined by a position and an amplitude,wherein a position of at least one pulse is determined from N possible position variations of said at least one pulse, N being set in advance to be greater than one, andwherein an amplitude value is set in advance for each of said N possible position variations of said at least one pulse and an amplitude of said at least one pulse is determined as the amplitude value corresponding to the determined position of the said at least one pulse.

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