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8 kbit/s LD-CELP Coding for Mobile Radio

  • Ezio Biglieri
  • Juan Carlos De Martin
Conference paper
Part of the NATO ASI Series book series (volume 147)

Abstract

This paper describes an 8 kbit/s LD-CELP coder. After describing the solutions chosen for the design of the coder, we approach the problem of channel coding, i.e., of protection of the quality of speech transmitted over a bursty channel.

Keywords

Pitch Period Unequal Error Protection Formant Filter Code Delay Logarithmic Gain 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    J. R. Boisson De Marca and N. S. Jayant, “An algorithm for assigning binary indices to the codevectors of a multidimensional quantizer” Proc. IEEE Int. Conf. Commun., pp. 1128–1132, June 1987.Google Scholar
  2. [2]
    J.-H. Chen, “High-quality 16 kb/s speech coding with a one-way delay less than 2 ms,” Proc. Int. Conf. Acoust., Speech, Signal process., pp. 453–456, Apr. 1990.Google Scholar
  3. [3]
    J.-H. Chen, R. V. Cox, Y.-C. Lin, N. Jayant, and M. J. Melchner, “Low-delay CELP coder for the CCITT 16 kb/s speech coding standard,” IEEE Journal on Selected Areas in Communications, Vol. 10, No. 5, pp. 830–849, June 1992.CrossRefGoogle Scholar
  4. [4]
    J.-H. Chen and M. S. Rauchwerk, “An 8 kb/s low-delay CELP speech coder,” Proc. of IEEE GLOBECOM’91, Phoenix, AZ, pp. 1894–1898, 2-5 Dec, 1991.Google Scholar
  5. [5]
    N. Farvardin, “A study of vector quantization for noisy channels,” IEEE Trans. Inform. Theory, Vol. 36, No. 4, pp. 799–809, July 1990.MathSciNetCrossRefGoogle Scholar
  6. [6]
    K. A. Zeger and A. Gersho, “Zero redundancy channel coding in vector quantisation,” Electron. Lett., Vol. 23, No. 12, pp. 654–656, June 1987.CrossRefGoogle Scholar
  7. [7]
    Coding of Speech at 16 kbitls Using Low-Delay Code Excited Linear Prediction (LD-CELP). CCITT Draft Recommendation G.728.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • Ezio Biglieri
  • Juan Carlos De Martin
    • 1
  1. 1.Dipartimento di ElettronicaPolitecnicoTorinoItaly

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