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一种改进的音段声码器编码方法 被引量：2

An Improved Segment Vocoder
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摘要 本文以一种定速率音段声码器采用的分段算法为基础,提出了一种以随机码本作为初始码本结合“联合分段量化法”的码本训练方法,改进了基音轨迹的表示方法,并验证了一种说话人自适应方法的效果。 Based on the segmentation algorithm of a fixed-rate segment vocoder, a new codebook training method is promoted in which the initial codebook is a random codebook and the joint segmentation and quantization algorithm is used. The quantization scheme of the pitch track is improved and a speaker adaptation method is also verified.
作者 邓昊 李双田 成少锋
机构地区 中国科学院声学研究所
出处 《信号处理》 CSCD 2003年第5期448-452,共5页 Journal of Signal Processing
基金 中国科学院声学研究所知识创新工程前瞻项目基金
关键词 音段声码器 分段算法 编码方法 甚速率语音编码算法 基音轨迹 very low-bit-rate speech coding segment vocoder codebook training method speaker adaptation
分类号 TN912.32 [电子电信—通信与信息系统]
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参考文献9

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同被引文献11

  • 1丛键,张知易.一种600bps极低速率语音编码算法[J].电子与信息学报,2007,29(2):429-433. 被引量：7
  • 2Chamberlain M W. A 600bps MELP vocoder for use on HF channels [C]//IEEE MILCOM. Mclean, VA, USA: IEEE Press, 2001:447-450.
  • 3Wang T, Koishida K,Cuperman V, et al. A 1200/ 2400bps coding suite based on MELP[C]//IEEE Workshop on Speech Coding. Tsukuba,Japan:IEEE Press,2002:90-92.
  • 4Roucos S,Wilgus A,Russell W. A segment vocoder algorithm for real-time implementation[C]//IEEEICASSP. Dallas, TX, USA: IEEE Press, 1987: 1949-1952.
  • 5Roucos S, Schwartz R, Makhoul J. A segment vocoder at 150B/S [C]//IEEE ICASSP. Boston, Mass, USA: IEEE Press, 1983:61-64.
  • 6Shiraki Y, Honda M. LPC speech coding based on variable-length segment quantization [ J]. IEEE Trans on ASSP, 1988,36 (9) :1437-1444.
  • 7闵刚 蒋永生 杨吉斌 等.分段声码器中的语音分段算法研究.信号处理,2007,23(4):119-122.
  • 8Chetan J V. Very low bit rate speech coding using segmentation [D]. Bombay:Indian Institute of Technology, 2005 : 22-23.
  • 9Paliwal K K,Atal B S. Efficient vector quantization of LPC parameters at 24bits/frame[J]. IEEE Trans on Speech and Audio Processing, 1993,1 (1) : 3-14.
  • 10Chen Sin-horng, Wang Yih-ru. Vector quantization of pitch information in Mandarin speech[J]. IEEE Trans on Communication, 1990,38(9) : 1317-1320.

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信号处理
2003年 第5期

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