Title :
Analysis of structured excitation codebooks used in CELP speech compression algorithms
Author :
Gardner, William R.
Author_Institution :
LSI Logic Wireless Design Center, Carlsbad, CA, USA
Abstract :
This paper presents an analysis of different suboptimal codebook excitation schemes used in code-excited linear prediction (CELP) speech compression algorithms. The problem of low rate, shape-gain vector quantization is formulated. Analyses of pulse codebooks, circularly recursive codebooks, algebraic codebooks, and vector sum codebooks are presented.
Keywords :
linear predictive coding; speech coding; vector quantisation; CELP speech compression algorithms; algebraic codebooks; circularly recursive codebooks; code-excited linear prediction; low rate shape-gain vector quantization; pulse codebooks; structured excitation codebooks; suboptimal codebook excitation schemes; vector sum codebooks; Algorithm design and analysis; Compression algorithms; Energy measurement; Large scale integration; Logic design; Noise measurement; Signal to noise ratio; Speech analysis; Testing; Vector quantization;
Conference_Titel :
Signals, Systems & Computers, 1997. Conference Record of the Thirty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-8316-3
DOI :
10.1109/ACSSC.1997.679066
