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基于CELP编码模型的参数转码技术 被引量：1

Parameter Transcoding Based on CELP Speech Coding
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摘要 分析了基于CELP语音编码模型的参数转码算法,并以此为基础对关键性技术进行了总结,主要分析和描述了LSP系数、自适应码书、固定码书和码书增益参数的转码算法。设计并实现了一种G.729A8Kb/s到AMR-NB7.95Kb/s模式的参数转码算法,客观质量测试结果表明,该参数转码算法的合成语音质量略优于级联方法。 Several transcoding algorithms are analyzed based on CELP speech coding, and the key techniques are summarized. The transcoding algorithms related to LSP（Line-Spectrum Pair） parameters, adaptive codebook, fixed codebook and their gains are described. A kind of parameter transcoding algorithm between G.729A at 8 Kb/s and AMR-NB at 7.95 Kb/s is designed. The objective quality test results show that this transcoding algorithm performs better than tandem transcoding.
作者 邱建伟 鲍长春 徐昊 刘张宇
机构地区 北京工业大学电子信息与控制工程学院语音与音频信号处理实验室
出处 《电声技术》 2009年第4期66-71,共6页 Audio Engineering
关键词 语音编码:语音转码:码激励线性预测 speech coding speech transcoding code-excited linear prediction
分类号 TN912.32 [电子电信—通信与信息系统]
  • 相关文献

参考文献16

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二级参考文献16

  • 1[1]Sung-Kyo Jung, Hong-Goo Kang. International Speech Coding Standards[J]. Telecommunications Review, 2003, 13(5): 682 - 694.
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  • 6[6]3GPP TS 26.073: AMR speech Codec; C-source code V5.20 (Release 5)[S], 2003-09.
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共引文献44

同被引文献12

  • 1赵永刚,唐昆,崔慧娟.基于Gaussian混合模型的LSF参数量化方法[J].清华大学学报（自然科学版）,2006,46(10):1727-1730. 被引量：2
  • 2ETSI EN 301 704 V7.2.1 Adaptive Multi-Rate(AMR)Speech Transcoding[S]. 2000.
  • 3ITU-T G.729:Coding of Speech at 8kbit/s Using Conjugate Structure Algebraic Code Excited Linear Prediction(CS-ACELP)[S]. 1996.
  • 4ITU-T G.729A: Educed Complexity 8kbit/s CS-ACELP Speech Codec[S]. 1996.
  • 5OTA Y, SUZUKI M, TSUCHINAGA Y, et al. Speech coding translation for IP and 3G mobile integrated network[A]. IEEE International Conference on Communications[C]. New York: IEEE Press, 2002. 114-118.
  • 6GHENANIA M, LAMBL1N C. Low-cost smart transcoding algorithm between ITU-T G.729 (8kbit/s) and 3GPPNB-AMR (12.2kbit/s)[A]. European Signal Processing Conference[C]. Vienna: EUSIPCO Press, 2004, (3): 1681-1684.
  • 7吴金池.语音辩识系统之研究[D].台湾国立中央大学,2003.9-17.
  • 8KAIN A B. High Resolution Voice Transformation[D]. Oregon Health and Science University, 2001.36-54.
  • 9康永国,双志伟,陶建华等.高斯混合模型和码本映射相结合的语音转换算法[A].第八届全国人机语音通讯学术会议[c].2005.293-297.
  • 10ITU-T P.800.1 :Mean Opinion Score(MOS) Terminology[S]. 2003.

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电声技术
2009年 第4期

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