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作者:

Bao, Chang-Chun (Bao, Chang-Chun.) (学者:鲍长春) | Li, Hai-Ting (Li, Hai-Ting.) | Liu, Ze-Xin (Liu, Ze-Xin.) | Fan, Rui (Fan, Rui.) | Zhu, Heng (Zhu, Heng.) | Jia, Mao-Shen (Jia, Mao-Shen.) | Li, Rui (Li, Rui.)

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EI Scopus

摘要:

This paper describes a 8-32 kb/s embedded speech codec submitted as a candidate for the ITU-T Embedded Variable Bit Rate (EV-VBR) standardization. The coder is built upon a 2-stage coding structure consisting of embedded ACELP coding from 8 to 16kb/s and embedded TCX coding at 24 and 32 kb/s. The coder is designed to support bandwidth scalability (narrow band and wide band signal) and bit-rate scalability (8∼32 kb/s). The output bit-stream produced by the coder is scalable, consisting of core layer and four enhancement layers at 8 kb/s, 12 kb/s, 16 kb/s, 24 kb/s and 32 kb/s individually. ITU-T's test results showed that this coder has good performance compared with reference codec. Copyright © 2008 ISCA.

关键词:

Speech coding Speech communication Standardization Scalability Codes (symbols)

作者机构:

  • [ 1 ] [Bao, Chang-Chun]Speech and Audio Signal Processing Lab., School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 2 ] [Li, Hai-Ting]Speech and Audio Signal Processing Lab., School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 3 ] [Liu, Ze-Xin]Speech and Audio Signal Processing Lab., School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 4 ] [Fan, Rui]Speech and Audio Signal Processing Lab., School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 5 ] [Zhu, Heng]Speech and Audio Signal Processing Lab., School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 6 ] [Jia, Mao-Shen]Speech and Audio Signal Processing Lab., School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
  • [ 7 ] [Li, Rui]Speech and Audio Signal Processing Lab., School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China

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年份: 2008

页码: 687-690

语种: 英文

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