Technical Program

Paper Detail

Paper:SP-P5.13 (ICASSP 2003 Paper)
Session:Topics in Speech Coding
Time:Wednesday, May 19, 09:30 - 11:30
Presentation: Poster (ICASSP 2003 Presentation)
Topic: Speech Processing: Wideband Speech Coding
Title: A STUDY OF JOINT SOURCE-CHANNEL CODING OF LSP PARAMETERS FOR WIDEBAND SPEECH CODING
Authors: José L. Pérez-Córdoba; Universidad de Granada 
 Antonio M. Peinado; Universidad de Granada 
 Victoria E. Sánchez; Universidad de Granada 
 Antonio J. Rubio; Universidad de Granada 
Abstract: A study of combined source and channel coding applied to LSP parameters in wideband speech coding is presented. The traditional approach to protect against channel errors is to increase the bit-rate for channel coding, decreasing the bit-rate of the source coding according the channel conditions.Joint source-channel coding is an alternative that provides a technique to mitigate channel errors without an increase of the bit-rate due to channel coding. This paper presents a study of Channel Optimized Vector Quantizer and Channel Optimized Matrix Quantizer applied to Line SpectralPairs (LSP) parameters in wideband speech coding. Gaussian and slow-fading Rayleigh channels are considered and GMSK (Gaussian Minimum Shift-Keying) is used as modulation technique. In addition, for comparison purposes, the performance of other schemes (Split Vector Quantization, Split Matrix Quantization and Split Multi-Stage Vector Quantization) for quantizing the LSP parameters are evaluated.
 
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