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作者:

Li, Jing (Li, Jing.) | Bao, Chang-Chun (Bao, Chang-Chun.) (学者:鲍长春) | Bai, Yan-Ning (Bai, Yan-Ning.)

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摘要:

To reduce the computational complexity and storage of the line spectrum frequency (LSF) parameters quantizer a predictive multi-stage split vector quantizer is designed to quantize LSF parameters by using the correlation of LSF parameters between frames and inter frames. The LSF residual vector is quantized by 2-stage vector qutization (VQ) and error vector is divided into 4-D and 6-D subvectors in the second stage. This vector quantizer achieves an average spectral distortion of less than 1 dB at 20 bits/frame with low computational complexity and storage, where the multi-stage VQ simultaneous joint design algorithm is used to train the codebooks and the M-L tree search algorithm is applied to select codes.

关键词:

Algorithms Computer simulation Flowcharting Linear programming Speech coding Vector quantization

作者机构:

  • [ 1 ] [Li, Jing]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100022, China
  • [ 2 ] [Bao, Chang-Chun]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100022, China
  • [ 3 ] [Bai, Yan-Ning]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100022, China

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来源 :

Journal of Beijing University of Technology

ISSN: 0254-0037

年份: 2005

期: 2

卷: 31

页码: 130-135

被引次数:

WoS核心集被引频次: 0

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