A Fast Encoding Technique for Vector Quantization of LSF Parameters(Multimedia Systems for Communications)

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概要

• 論文の詳細を見る

• A fast encoding technique is described for vector quantization (VQ) of line spectral frequency parameters. A reduction in VQ encoding complexity is achieved by using a preliminary test that reduces the necessary codebook search range. The test is performed based on two criteria. One criterion uses the distance between a specific single element of the input vector and the corresponding element of the codevectors in the codebook. The other criterion makes use of the ordering property of LSF parameters. The fast encoding technique is implemented in the enhanced variable rate codec (EVRC) encoding algorithm. Simulation results show that the average searching range of the codebook can be reduced by 44.50% for the EVRC without degradation of spectral distortion (SD).

• 社団法人電子情報通信学会の論文
• 2005-09-01

著者

• Kang Sangwon

  School Of Eecs Hanyang University

• Kang Sangwon

  School Of Electrical Eng. And Computer Science Hanyang University

• FISCHER Thomas

  School of Elc. Eng. and Comp. Science, Washington State Univ.

• Fischer Thomas

  School Of Elc. Eng. And Comp. Science Washington State Univ.

• Fischer Thomas

  School Of Electrical Eng. And Computer Science Washington State University

• SHIN Yongwon

  Telecomm. R&D Cener, Telecomm. Network, Samsung Electronics Co., Ltd.

• SON Changyong

  Digital Research Center, Samsung Advanced Institute of Technology, Samsung Electronics Co., Ltd.

• Shin Yongwon

  Telecomm. R&d Cener Telecomm. Network Samsung Electronics Co. Ltd.

• Son Changyong

  Digital Research Center Samsung Advanced Institute Of Technology Samsung Electronics Co. Ltd.

関連論文

• Designing Algebraic Trellis Code as a New Fixed Codebook Module for ACELP Coder
• A Fast Encoding Technique for Vector Quantization of LSF Parameters(Multimedia Systems for Communications)
• Predictive Trellis-Coded Quantization of the Cepstral Coefficients for the Distributed Speech Recognition(Multimedia Systems for Communications)

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