Title :
Vector sum excited linear prediction (VSELP) speech coding at 8 kbps
Author :
Gerson, Ira A. ; Jasiuk, Mark A.
Author_Institution :
Motorola Inc., Schaumburg, IL, USA
Abstract :
The vector sum excited linear prediction speech coder is presented. It utilizes a codebook with a structure that allows for a very efficient search procedure. Other advantages of the VSELP codebook structure are discussed, and a detailed description of an 8-kb/s VSELP coder is given. This coder was selected by the Telecommunications Industry Association (TIA) as the standard for use in North American digital cellular telephone systems. The coder uses two VSELP excitation codebooks, a gain quantizer which is robust to channel errors, and a novel adaptive pre/postfilter arrangement
Keywords :
cellular radio; encoding; filtering and prediction theory; speech analysis and processing; vocoders; 8 kbit/s; North American digital cellular telephone systems; VSELP codebook structure; VSELP excitation codebooks; gain quantizer; vector sum excited linear prediction speech coder; Adaptive filters; Bit rate; Code standards; Communication industry; Computational complexity; Decoding; Linear predictive coding; Research and development; Robustness; Speech coding; Speech synthesis; Telecommunication standards; Telephony; Vectors;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.115749
