Digital coding of speech in sub-bands

  title={Digital coding of speech in sub-bands},
  author={Ronald E. Crochiere and Susan A. Webber and James L. Flanagan},
  journal={The Bell System Technical Journal},
A rationale is advanced for digitally coding speech signals in terms of sub-bands of the total spectrum. The approach provides a means for controlling and reducing quantizing noise in the coding. Each sub-band is quantized with an accuracy (bit allocation) based upon perceptual criteria. As a result, the quality of the coded signal is improved over that obtained from a single full-band coding of the total spectrum. In one implementation, the individual sub-bands are low-pass translated before… CONTINUE READING


Publications citing this paper.
Showing 1-10 of 89 extracted citations


Publications referenced by this paper.
Showing 1-8 of 8 references

Digital Filter Implementa­ tions for Decimation, Interpolation, and Narrowband Filtering,

  • R . E . Crochiere, L. R. Rabiner, R OptimumFI
  • I E E E Trans. Acoust., Speech, and Signal P r o…
  • 1975

Transmitting Differential Coders for Mobile Teleph­ ony,

  • N. S. Jayant, Step-Size
  • B .S .T .J . ,
  • 1975

Adaptive Quantization in Differential P C M Coding of Speech,

  • P. Cummiskev, N. S. Jayant, J . L . Flanagan
  • B .S .T .J . ,
  • 1973

Kryter , " Methods for the Calculation and Use of the Articulation Index , " J . Acoust

  • J. L. Flanagan
  • 1962

Kryter, "Methods for the Calculation and Use of the Articulation Index,

  • Κ D.
  • J . Acoust. Soc. Amer.,
  • 1962
1 Excerpt

A Bit-Squeezing Technique Applied to Speech Signals,

  • Ε . E . David, H. S. McDonald
  • I R E Convention Record,
  • 1956

Kretzmer, "Reduced-Alphabet Representation of Television Signals,

  • E R.
  • I R E Convention Record,
  • 1956
1 Excerpt

Band Width and Transmission Perform­ ance," B .S .T .J

  • C. B. Feldman, W. R. Bennett
  • (Jiily
  • 1949

Similar Papers

Loading similar papers…