DocumentCode
921765
Title
Trellis-searched adaptive predictive coding of speech
Author
Malone, Kevin T. ; Fischer, Thomas R.
Author_Institution
Sandia Nat. Lab., Albuquerque, NM, USA
Volume
1
Issue
2
fYear
1993
fDate
4/1/1993 12:00:00 AM
Firstpage
196
Lastpage
206
Abstract
Trellis coded vector quantization (TCVQ) and forward adaptive predictive coding (APC) are used to form an efficient speech coding system operating at bit rates of 16 and 9.6 kb/s. The effectiveness of the system is studied for a variety of system parameters and utterances. Simulation results indicate that segmental signal-to-noise ratios as high as 23.8 and 15.4 dB are obtainable at 16 and 9.6 kb/s respectively. The quality of the reconstructed speech is deemed to be excellent at 16 kb/s and very good at 9.6 kb/s. An algorithm for optimizing the residual codebooks is presented
Keywords
linear predictive coding; speech coding; trellis codes; vector quantisation; 16 kbit/s; 9.6 kbit/s; APC-TCVQ system; forward adaptive predictive coding; residual codebooks; segmental signal-to-noise ratios; speech coding; trellis coded vector quantisation; Automata; Bit rate; Decoding; Delay; Distortion measurement; Encoding; Predictive coding; Signal to noise ratio; Speech coding; Vector quantization;
fLanguage
English
Journal_Title
Speech and Audio Processing, IEEE Transactions on
Publisher
ieee
ISSN
1063-6676
Type
jour
DOI
10.1109/89.222878
Filename
222878
Link To Document