期刊文献+

语音谱参数的切换双预测多级矢量量化的码本设计方法 被引量:1

Design Method for Switched Dual Predictive Multi-Stage VQ of LPC Parameters
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摘要 提出了语音谱参数的切换双预测多级矢量量化算法 (DPMSVQ)的码本设计方法。这种改进的多级矢量量化方法充分利用语音谱参数的短时相关和长时相关特性 ,采用了有记忆的多级矢量量化算法 (MSVQ) ;并且通过利用相邻语音帧间语音谱参数的强相关和弱相关的不同特点 ,采用了分别对应于强相关和弱相关的两个预测值 ,进一步减小了语音谱参数编码位率。切换双预测多级矢量量化方法能够实现 2 1位的语音谱参数近似“透明”量化 ,同时能够使语音谱参数量化时的计算复杂度略有减少 ,所需的存储空间大为减少。 A codebook design method for a switched dual predictive multi stage vector quantization (DPMSVQ) scheme of LPC parameters. This modified multi stage vector quantization algorithm (MSVQ) uses multi stage vector quantization with memory for short term correlation and long term correlation of LPC parameters, and two predictive coefficients for strong correlation and weak correlation of LPC parameters of adjacent speech frames respectively, and reduces the bit rate of LPC parameters. DPMSVQ can achieve transparent quantization of LPC parameters with 21 bits per speech frame, and makes the search complexity and the storage of the quantization of LPC parameters reduced.
出处 《数据采集与处理》 CSCD 2002年第2期137-141,共5页 Journal of Data Acquisition and Processing
基金 国家自然科学基金 (编号 :49771 0 64) 湖北省自然科学基金 (编号 :Z1 1 1 3 0 494)资助项目
关键词 语音谱参数 多级矢量量化 码本设计方法 语音编解码算法 语音信号处理 multi stage VQ codebook design speech coding algorithm
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参考文献5

  • 1[1]Gersho A, Gray R M. Vector quantization and signal compression[M]. Kluwer Academic Publishers,1992
  • 2[2]LeBlanc W P,Bhattacharya B, Mahmound S A,et al. Efficient search and design procedures for robust multi-stage VQ of LPC parameters for 4 Kb/s speech coding[J]. IEEE Trans Speech and Audio Processing,1993,1(4):373~385
  • 3[3]Paliwal K, Atal B. Efficient vector quantization of LPC parameter at 24 bits/frame[J]. IEEE Trans Speech and Audio Processing,1993,1(1):3~14
  • 4[4]Xydeas C S, Papanastasiou C. Efficient coding of LSP parameters using split Matrix quantization[C]. In: ICASSP 1995.740~743
  • 5[5]Gardner W R, Dao B D. Theoretical analysis of the high-rate vector quatization of LPC parameters[J]. IEEE Trans on Speech and Audio Processing,1995,3(5):367~381

同被引文献20

  • 1邹霞,陈亮,张雄伟.高质量鲁棒600BPS甚低速率语音编码算法[J].信号处理,2003,19(z1):109-112. 被引量:4
  • 2Supplee L M, McCree A V. MELP: the new federal standard at 2400bit/s [C]//IEEE International Conference on Acoustics, Speech and Signal Processing. Munich, Germany: IEEE, 1997: 1591-1594.
  • 3WangT, Koishida K, Cuperman V, et al. A 1200/ 2400bps coding suite based on MELP [C]//IEEE Workshop on Speech Coding. Tsukuba, Japan: IEEE, 2002: 90-92.
  • 4Villette S, Al-naimi K T, Sturt C, et al. A 2.4/ 1.2kbps SB-LPC based speech coder: the Turkish NATO STANAG candidate [C]//IEEE Workshop on Speech Coding. Tsukuba, Japan: IEEE, 2002: 87-89.
  • 5Guilmin G, Gournay P, Chartier F. Description of the French NATO candidate[C]//IEEE Workshop on Speech Coding. Tsukuba, Japan: IEEE, 2002: 84-86.
  • 6Chamberlain M W. A 600bps MELP vocoder for use on HF channels [C]//IEEE MILCOM. Washington, USA: IEEE, 2001: 447-450.
  • 7Paliwal K K, Atal B. Efficient vector quantization of LPC Parameters at 24 bits/frame [C]//IEEE International Conference on Acoustics, Speech and Signal Processing. Toronto, Canada: IEEE, 1991: 661- 664.
  • 8LeBlanc W P, Bhattacharya B, Mahmoud S A, et al. Efficient search and design procedures for robust multi-stage VQ of LPC parameters for 4 Kb/s speech coding [J]. IEEE Trans Speech and Audio Processing, 1993, 1(4): 373-385.
  • 9De Marca J R B. An LSF quantizer for the NorthAmerican half-rate speech coder [J]. IEEE Trans Vehicular Technology, 1994, 43(3): 413-419.
  • 10Chang P C, Gray R M. Gradient algorithm for designing predictive vector quantizers [J]. IEEE Trans ASSP, 1986, 34(4): 679-690.

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