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Voice encoding device, voice decoding device, recording medium for recording program for realizing voice encoding/decoding and mobile communication device

  • US 6,421,638 B2
  • Filed: 12/05/2000
  • Issued: 07/16/2002
  • Est. Priority Date: 08/02/1996
  • Status: Expired due to Term
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1. A CELP type voice encoding device which performs a voice encoding process for each sub-frame having a predetermined time length, determines whether or not a phase in the present sub-frame and a phase in the immediately previous sub-frame are continuous, and structure of a sound source to be used is switched from one to another depending on the result of the determination as to continuousness.

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