Training Method of The Excitation Codebook for CELP

Takehiro Moriya, Satoshi Miki, Kazunori Mano, Hitoshi Ohmuro

研究成果: Paper査読

6 被引用数 (Scopus)

抄録

An iterative training method is proposed for the design of random codebooks and channel code mapping tables for a CELP coder. The method is based on a structured excitation source such as a conjugate structure, pitch isynchronization, rotation of samples, time-domain sloped gain, and code mapping to channel code. Closed-loop distortion measure, that is, perceptually weighted distortion between the input and the synthesized speech, is used in all training procedures. The training improves the SNR by around 1 dB and improves subjective quality. The channel code mapping and channel-matched distortion measure increases robustness against channel error.

本文言語English
ページ1155-1158
ページ数4
出版ステータスPublished - 1993
外部発表はい
イベント3rd European Conference on Speech Communication and Technology, EUROSPEECH 1993 - Berlin, Germany
継続期間: 1993 9月 221993 9月 25

Conference

Conference3rd European Conference on Speech Communication and Technology, EUROSPEECH 1993
国/地域Germany
CityBerlin
Period93/9/2293/9/25

ASJC Scopus subject areas

  • ソフトウェア
  • 言語学および言語
  • コンピュータ サイエンスの応用
  • 通信

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