High quality 16 kb/s voice transmission

Goldberg, A. J.; Freudberg, R.; Cheung, Ronald

doi:10.1109/icassp.1976.1170081

Cited by 11 publications

(3 citation statements)

References 3 publications

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“…(Note the difference between (11) and (2).) Equation (11) defines the new system that is to be implemented using the filters A() and B(z) such that the quantized residual W(z) will yield the desired output at the receiver.…”

Section: (Z) A(z)/a(z)mentioning

confidence: 99%

“…S/Q is a segmental value as defined in [2,4,5] and should be distinguished from the input signal-to-noise (S/N) 'atio which describes the condition of the input speech signal.…”

Section: Introductionmentioning

confidence: 99%

“…APC systems, first applied to speech by Atal and Schroeder [1], have been studied quite extensively in the literature, and appear with various levels of complexity [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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High quality adaptive predictive coding of speech

Berouti

Makhoul²

ICASSP '78. IEEE International Conference on Acoustics, Speech, and Signal Processing

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We report on the results of research to code speech at 16 kbps under the condition that the quality of the transmitted speech be eaual to that of the original. Some of the original speech had been corrupted by noise and distortions typical of long distance telephone lines. The rigorous requirements of this work led to a new outlook on adaptive predictive coding. We have found that the pitch predictor is not useful on balance and should be eliminated, and that the residual should be quantized with no clipping and encoded using a variable-length code. A single coding scheme seems to be adequate for all speech and all conditions. In addition, the adaptive predictive coding system has been modified to include a noise spectral shaping filter that effectively eliminates the perception of background granular noise.

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Section: (Z) A(z)/a(z)mentioning

confidence: 99%

“…S/Q is a segmental value as defined in [2,4,5] and should be distinguished from the input signal-to-noise (S/N) 'atio which describes the condition of the input speech signal.…”

Section: Introductionmentioning

confidence: 99%

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High quality 16 kb/s voice transmission

Cited by 11 publications

References 3 publications

High quality adaptive predictive coding of speech

High quality adaptive predictive coding of speech

Predictive coding with delayed decision.

Application of CVSD with delayed decision to narrowband/Wideband tandem

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