NDLI: Generalized predictive trellis coded quantization of speech

Content Provider	IEEE Xplore Digital Library
Author	Marcellin, M.W. Fischer, T.R.
Copyright Year	1989
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA (Marcellin, M.W.)
Abstract	Trellis-coded quantization (TCQ) is incorporated into a generalized predicted (noise feedback) structure for encoding sampled speech. Adaptive residual encoding and adaptive prediction are used to obtain signal-to-noise ratios (SNR) in the range of 17.5 to 21.5 dB for encoding sampled speech with 2 bits/sample (16 kb/s). Spectral noise shaping is achieved with this coding structure by using a bandwidth-expanded version of the predictor as a noise feedback filter. This has the effect of reducing the SNR of the encoding by a small amount but improving the perceptual quality of the reconstructed speech. The result is of excellent communications quality. A modified Viterbi algorithm is used for the trellis search to allow flexibility in the choice of symbol release rule. The effects of varying the encoding delay and the number of symbols released per trace-back on system performance and complexity are investigated. It is shown that excellent SNR performance can be obtained with modest encoding delays.<>
Starting Page	144
Ending Page	148
File Size	404582
Page Count	5
File Format	PDF
ISBN	081861918X
DOI	10.1109/PCCC.1989.37376
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-03-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quantization Encoding Noise shaping Signal to noise ratio Feedback Speech enhancement Filters Viterbi algorithm Delay effects System performance
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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