Approximated correlation matrix and pulse prediction for fast algebraic code-excited lpc speech coders

Shu Min Tsai, Jar Ferr Yang

研究成果: Conference contribution

1 引文 斯高帕斯(Scopus)

摘要

With reducing computational complexity, an approximated correlation matrix of the vocal impulse response is proposed in algebraic-code-excited linear prediction (ACELP) coders. By exploring statistical characteristics, we only need to calculate a small portion of correlation coefficients before ACELP search procedure. If we further combine a pulse position prediction algorithm, we can reduce the arithmetic complexity in pre-computing autocorrelation matrix and the number of pulse position combinations with imperceptible degradation in speech quality performance. The proposed scheme can be applied to all ACELP coders such as ITU G.729 and G723.1.

原文English
主出版物標題2006 IEEE International Conference on Multimedia and Expo, ICME 2006 - Proceedings
頁面181-184
頁數4
DOIs
出版狀態Published - 2006
事件2006 IEEE International Conference on Multimedia and Expo, ICME 2006 - Toronto, ON, Canada
持續時間: 2006 七月 92006 七月 12

出版系列

名字2006 IEEE International Conference on Multimedia and Expo, ICME 2006 - Proceedings
2006

Other

Other2006 IEEE International Conference on Multimedia and Expo, ICME 2006
國家/地區Canada
城市Toronto, ON
期間06-07-0906-07-12

All Science Journal Classification (ASJC) codes

  • 媒體技術
  • 電氣與電子工程

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