Robust vector quantization in spectral coding
- 1 January 1993
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2 (15206149) , 13-16 vol.2
- https://doi.org/10.1109/icassp.1993.319216
Abstract
A mapping of a binary block code is used to generate the reconstruction vectors of a vector quantizer. The aim is to secure channel robustness while allowing for efficient design, storage, and handling of the vector quantizer. The general procedure is exemplified by the task of spectral coding for speech transmission. Using an LSP (line spectrum pair)-representation for the spectrum, it is demonstrated that short block codes are feasible, thus allowing for compact storage of the code-book. These short block codes combine low quantization noise in clear channel conditions with robustness to bit errors introduced by a noisy channel. A reduced length code offers the possibility of obtaining a vector quantizer. The block code structure of the code vector generation may also be exploited for efficient search of the code-book.Keywords
This publication has 10 references indexed in Scilit:
- Code-excited linear prediction(CELP): High-quality speech at very low bit ratesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Optimal quantization of LSP parametersIEEE Transactions on Speech and Audio Processing, 1993
- How good is your index assignment?Published by Institute of Electrical and Electronics Engineers (IEEE) ,1993
- Spectral coding by LSP frequencies—scalar and segmented VQ-methodsIEE Proceedings I Communications, Speech and Vision, 1992
- Vector Quantization and Signal CompressionPublished by Springer Nature ,1992
- Tree searched multi-stage vector quantization of LPC parameters for 4 kb/s speech codingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1992
- Efficient vector quantization of LPC parameters at 24 bits/framePublished by Institute of Electrical and Electronics Engineers (IEEE) ,1991
- Pseudo-Gray codingIEEE Transactions on Communications, 1990
- Zero redundancy channel coding in vector quantisationElectronics Letters, 1987
- An Algorithm for Vector Quantizer DesignIEEE Transactions on Communications, 1980