Journal of the Korean Institute of Telematics and Electronics B (전자공학회논문지B)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Half Rate Speech Soder using Trellis Excitation

Trellis excitation을 이용한 half rate 음성부호화기

  • 강상원 (한양대학교 제어계측공학과) ;
  • 이형수 (성균관대학교 정보공학과) ;
  • 김영수 (경희대학교 전파공학과) ;
  • 정진욱 (성균관대학교 정보공학과)
  • Published : 1996.02.01
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Abstract

In this paper, we present a half rate speech coder using trellis excitation. The coder combines code-excited linear prediction (CELP) system and trellis quantization method using the codebook expansion, and it produces higher speech quality than the typical CELP coder for the same transmission rate. A subjective comparison with 3~8 bit .$\mu$-law PCM indicates that the half rate coder provides speech quality between 5-bit and 6-bit $\mu$-law PCM .

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