Title :
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
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;
Conference_Titel :
Digitized Speech Communication via Mobile Radio, IEE Colloquium on
Conference_Location :
London
