| 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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