Efficient Codebook Search Method for AMR Wideband Speech Codecs(Speech and Hearing)

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概要

• 論文の詳細を見る

• The AMR wideband speech codec was recently developed for high-quality wideband speech communications. Although it has an excellent performance due to expanded bandwidth of speech signal, it requires a huge amount of computation especially in codebook search. To solve this problem, this paper proposes an efficient codebook search method for AMR wideband codec. Starting from a poorly performing initial codevector, the proposed method enhances the performance of the codevector iteratively by exchanging the worst pulse in the codevector with a better one after evaluating the role of each pulse. Simulations show that the AMR wideband codec adopting the proposed codebook search method provides better performance with much less computational load than that using the standard method.

• 社団法人電子情報通信学会の論文
• 2004-08-01

著者

• Park Hochong

  Dept. Of Electronics Engineering Kwangwoon University

• KIM Younhee

  Dept. of Electronics Engineering, Kwangwoon University

• YOO Jisang

  Dept. of Electronics Engineering, Kwangwoon University

• Kim Younhee

  Dept. Of Electronics Engineering Kwangwoon University

• Yoo J

  Dept. Of Electronics Engineering Kwangwoon University

関連論文

• Efficient Codebook Search Method for AMR Wideband Speech Codecs(Speech and Hearing)

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