EUROSPEECH 2003 - INTERSPEECH 2003 8th European Conference on Speech Communication and Technology Geneva, Switzerland September 1-4, 2003

Robust Jointly Optimized Multistage Vector Quantization for Speech Coding

Venkatesh Krishnan, David V. Anderson

Georgia Institute of Technology, USA

In this paper, a novel channel-optimized multistage vector quantization (COMSVQ) codec is presented in which the stage codebooks are jointly designed. The proposed codec uses a signal source and channel-dependent distortion measure to encode line spectral frequencies derived from segments of a speech signal. Simulation results are provided to demonstrate the consistent reduction in the spectral distortion obtained using the proposed codec as compared to the conventional sequentially-designed channel-matched multistage vector quantizer.

Full Paper

Bibliographic reference.  Krishnan, Venkatesh / Anderson, David V. (2003): "Robust jointly optimized multistage vector quantization for speech coding", In EUROSPEECH-2003, 1093-1096.