NDLI: High quality 16 kb/s voice transmission

Content Provider	IEEE Xplore Digital Library
Author	Goldberg, A. Freudberg, R. Cheung, R.
Copyright Year	1976
Description	Author affiliation: GTE SYLVANIA, INC., Needham, Massachusetts (Goldberg, A.)
Abstract	In this paper, we discuss how adaptive predictive coders employing pitch and coefficient predictors perform when combined with adaptive multilevel quantizers to transmit speech at 16 Kb/s. Performance curves based on fixed point simulations provide a quantitative signal-to-noise analysis as a function of predictor complexity, quantizer adaptation strategy and channel error rate. For example, a fourth order adaptive predictor with pitch loop and adaptive 8-level quantization provides reconstructed speech that is perceptually indistinguishable from the original 2500 Hz band limited input. With channel errors, performance is found to be both a sensitive function of quantizer adaption strategy and predictor complexity. While complex predictors are superior to CVSD at error rates below $10^{-4},$ CVSD degrades less rapidly as channel errors increase, At $10^{-2}BER$ and above, CVSD outperforms the other techniques studied.
Starting Page	244
Ending Page	246
File Size	83552
Page Count	3
File Format	PDF
DOI	10.1109/ICASSP.1976.1170081
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1976-04-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Speech Error analysis Government Pulse modulation Analysis of variance Filters Analytical models Predictive models Signal analysis Performance analysis
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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