Title :
Fast CELP coding based on the Barnes-Wall lattice in 16 dimensions
Author :
Lamblin, Claude ; Adoul, J.-P. ; Massaloux, D. ; Morissette, S.
Author_Institution :
CNET LAA/TSS/CMC, Lannion, France
Abstract :
The authors present an algebraic code-excited linear prediction (CELP) speech coder where the innovation codebook comes from the first spherical code of the Barnes-Wall lattice in 16 dimensions. Novel fast optimal algorithms for finding the best sequence in this Barnes-Wall shell innovation codebook are described. This algebraic codebook makes it possible to design a CELP coder at 9.6 kb/s with good quality and still implementable on a current digital-signal-processing chip
Keywords :
encoding; filtering and prediction theory; speech analysis and processing; 16 dimensions; 9.6 kbit/s; Barnes-Wall lattice; CELP coding; algebraic codebook; code-excited linear prediction; fast optimal algorithms; innovation codebook; speech coding; spherical code; Cyclic redundancy check; Digital signal processing chips; Error correction codes; Filtering; Large Hadron Collider; Lattices; Linear predictive coding; Speech; Stochastic processes; Technological innovation;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266363
