Codebook searching for 4.8 kbps CELP speech coder

Author

Grieder, W. ; Langi, A. ; Kinsner, W.

Author_Institution

Dept. of Electr. & Comput. Eng, Manitoba Univ., Winnipeg, Man., Canada

fYear

1993

fDate

6/15/1905 12:00:00 AM

Firstpage

397

Lastpage

406

Abstract

The authors describe an implementation of fast algorithms for codebook searching used in code-excited linear predictive (CELP) speech coding. They present details of the algorithms including (i) fast conversion of line spectrum pair parameters to linear predictive coding parameters, and (ii) fast searches of the parameters of adaptive and stochastic codebooks. The description can be readily used for CELP implementations, such as on (i) high-quality low-bit-rate speech transmission in point-to-point or store-and-forward mode, and (ii) efficient speech storage in speech recording and multimedia databases. The algorithms have been implemented on an IBM-PC AT equipped with a TMS320C30 module and a SUN Sparcstation 10 for the development of packet radio speech transmission and voice mail applications, respectively.

Keywords

linear predictive coding; packet radio networks; search problems; speech coding; voice mail; 4.8 kbit/s; CELP; IBM-PC AT; SUN Sparcstation 10; TMS320C30 module; adaptive codebooks; code excited linear prediction; codebook searching; fast algorithms; line spectrum pair parameters; linear predictive coding parameters; multimedia databases; packet radio; point-to-point mode; speech coding; speech recording; speech storage; speech transmission; stochastic codebooks; store-and-forward mode; voice mail; Bit rate; Linear predictive coding; Multimedia databases; Packet radio networks; Performance analysis; Speech analysis; Speech coding; Stochastic processes; Sun; Voice mail;

fLanguage

English

Publisher

ieee

Conference_Titel

WESCANEX 93. 'Communications, Computers and Power in the Modern Environment.' Conference Proceedings., IEEE

Conference_Location

Saskatoon, Sask., Canada

Print_ISBN

0-7803-1319-4

Type

conf

DOI

10.1109/WESCAN.1993.270516

Filename

270516