Title :
Speech coding using trellis-searched APC
Author :
Malone, Kevin T. ; Fischer, Thomas R.
Author_Institution :
Sandia Nat. Lab., Albuquerque, NM, USA
Abstract :
The design of a speech coding system that uses trellis-coded vector quantization (TCVQ) and adaptive predictive coding (APC) is formulated. A method for optimizing the TCVQ codebooks is presented. Simulation results are given for encoding rates of 16 and 9.6 kb/s for a variety of coder parameters. At an encoding rate of 16 kb/s, informal listening tests found very little difference between the original sentences and the reconstructions. The 9.6 kb/s reconstructions were found to be natural sounding and of good quality
Keywords :
encoding; filtering and prediction theory; speech analysis and processing; 16 kbit/s; 9.6 kbit/s; TCVQ codebooks; adaptive predictive coding; coder parameters; encoding rate; informal listening tests; speech coding system; trellis-coded vector quantization; trellis-searched APC; Autocorrelation; Bit rate; Constellation diagram; Encoding; Laboratories; Predictive coding; Signal design; Source coding; Speech coding; Vector quantization;
Conference_Titel :
Global Telecommunications Conference, 1990, and Exhibition. 'Communications: Connecting the Future', GLOBECOM '90., IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-87942-632-2
DOI :
10.1109/GLOCOM.1990.116644
