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| Paper: | SP-P5.13 |
| 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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