Title :
Fast vector-sum codebook search method for low bit rate speech coding
Author :
Choi, Y.S. ; Park, S.W. ; Youn, D.H.
Author_Institution :
Dept. of Electron. Eng., Younsei Univ., Seoul, South Korea
fDate :
3/13/1997 12:00:00 AM
Abstract :
A fast vector-sum codebook search method for low bit rate speech coding is presented. In this method, the codebook search is simplified by designing a vector-sum codebook that consists of orthonormal regular pulse basis vectors. A further simplification is achieved by adopting backward filtering. The method proposed has significantly reduced computational complexity, compared with the conventional VSELP, without producing any additional degradation in the quality of the synthesised speech
Keywords :
computational complexity; filtering theory; speech coding; backward filtering; computational complexity reduction; fast vector-sum codebook search method; low bit rate speech coding; orthonormal regular pulse basis vectors;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970343
