Title :
16 kbps wideband speech coding technique based on algebraic CELP
Author :
Laflamme, C. ; Adoul, J.-P. ; Salami, R. ; Morissette, S. ; Mabilleau, P.
Author_Institution :
Commun. Res. Center, Sherbrooke Univ., Que., Canada
Abstract :
The application of algebraic code excited linear prediction (ACELP) coding to wideband speech is presented. An algebraic codebook with a 20 bit address can be used without any storage requirements and, more importantly, with a very efficient search procedure which allows for real-time implementation. The authors describe an efficient procedure for searching such a large codebook deploying a focused search strategy, where less than 0.1% of the codebook is searched with performance very close to that of a full search. High-quality speech at a bit rate of 13 kbps was obtained
Keywords :
encoding; filtering and prediction theory; search problems; speech analysis and processing; 13 kbit/s; 16 kbit/s; ACELP; algebraic CELP; algebraic code excited linear prediction; efficient search procedure; focused search strategy; high quality speech; large codebook; real-time implementation; wideband speech coding; Audio coding; Bandwidth; Bit rate; Frequency; Narrowband; Sampling methods; Speech coding; Speech synthesis; Telephony; Wideband;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150267
