Sensitivity weighted vector quantization of line spectral pair f

Details Sensitivity weighted vector quantization of line spectral pair f Sensitivity weighted vector quantization of line spectral pair f

1994-08-04

1997-12-30

MacDonald, Allen R.

395 225, 395 218, 395 239, G10L 914

Patent

active

057040010

ABSTRACT:
A novel and improved method and apparatus for quantizing the line spectral pair (LSP) frequencies in a speech compression system is disclosed. A novel and computationally efficient procedure for determining the set of quantization sensitivities for the LSP frequencies is disclosed, which results in a computationally efficient error measure for use in vector quantization of the LSP frequencies. A novel method of weighting the quantization error is disclosed, which accumulates the quantization error in each LSP frequency and weights that error by the sensitivity of that LSP frequency.

REFERENCES:
Frank K. Soong and Biing-Hwang Juang, "Optimal Quantization of LSP Parameters Using Delayed Decisions", ICASSP '90 Proceedings, 1990.
Frank K. Soong and Biing-Hwang Juang "Line Spectrum Pair (LSP) and Speech Data Compression", ICASSP '84 Proceedings, 1984.
William Robert Gardner, Modeling and Quantization Techniques for Speech Compression Systems, Ph.D. dissertation, University of California, San Diego, 1994.
Lawrence Rabiner and Biing-Hwang Juang, Fundamentals of Speech Recognition, Prentice-Hall, pp. 123, 171-172, 1993.
Jianping Pan et al. "Vector Quantization of Speech LSP Parameters Using Trellis Codes and l1-Norm Constraints", IEEE International Conference on Acoustics, Speech, and Signal Processing, vol. II of V, Apr. 27-30, 1993, pp. II-17-20.
Maurizio Omologo, "The Computation and Some Spectral Considerations on Line Spectrum Pairs (LSP)", IEEE European Conference on Speech Communication and Technology, vol. Two, Sep. 1989, pp. 352-255.
Yuval Bistritz et al., "Immittance Spectral Pairs (ISP) for Speech Encoding", IEEE International Conference on Acoustics, Speech, and Signal Processing, vol. II of V, Apr. 27-30, 1993, pp. II-9-12.
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Frank K. Soong et al., "Optimal Quantization of LSP Parameters", IEEE Transactions on Speech and Audi Processing, vol. 1, No. 1., Jan. 1, 1993, pp. 15-24.
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K.K. Paliwal et al. "Efficient Vector Quantization of LPC Parameters at 24 Bits/Frame", IEEE Transactions on Speech, and Audio Processing, vol. 1, No. 1, Jan., 1993, pp. 3-14.
K.K. Paliwal et al. "Efficient Vector Quantization of LPC Parameters at 24 Bits/Frame", IEEE International Conference on Acoustics, Speech and Signal Processing, vol. 1, May 14-17, 1991, pp. 661-664.

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