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

fYear

1991

fDate

14-17 Apr 1991

Firstpage

13

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on

Conference_Location

Toronto, Ont.

ISSN

1520-6149

Print_ISBN

0-7803-0003-3

Type

conf

DOI

10.1109/ICASSP.1991.150267

Filename

150267