Theory and real-time implementation of CELP base-band coder for mobile applications

Author

Kondoz, A.M. ; Asjadi, G.B. ; Evans, B.G.

Author_Institution

Dept. of Electron. & Electr. Eng., Surrey Univ., Guildford, UK

fYear

1988

fDate

32496

Firstpage

42370

Lastpage

42373

Abstract

The theory and real-time implementation of a new vector quantized base-band coder (CELP-BB), which was originally proposed for speech coding below 4.8 kbps is presented. At bit rates as low as 6 kb/s subjectively toll quality can be achieved. The authors concentrate on its theory and real-time implementation at 4.8 kb/s. Other advantage of CELP-BB over CELP, SELP etc., is that it can be implemented in a single DSP-32 digital signal processing chip (both encoder and decoder)

Keywords

computerised signal processing; data compression; digital signal processing chips; encoding; mobile radio systems; speech analysis and processing; vocoders; 4.8 kbit/s; CELP base-band coder; DSP-32 digital signal processing chip; data compression; decoder; encoder; mobile radio systems; real-time implementation; speech coding; vector quantisation;

fLanguage

English

Publisher

iet

Conference_Titel

Digitized Speech Communication via Mobile Radio, IEE Colloquium on

Conference_Location

London

Type

conf

Filename

209859

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=283761