Constrained-storage vector quantization in high fidelity audio transform coding
- 1 January 1991
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 3597-3600 vol.5
- https://doi.org/10.1109/icassp.1991.151052
Abstract
The concept and design methods for efficient use of vector quantization (VQ) in high-fidelity audio coding are presented. It is demonstrated that with constrained-storage VQ (CSVQ), tree-structured codebooks can be constructed for very high rates without incurring an exponential growth in storage complexity and without impairing the rate-distortion performance. Nonlinear interpolative VQ allows efficient coding of the power envelope needed for transform-coefficient normalization and adaptive distortion assignment. These techniques lead to a substantial reduction in the overall bit rate and codebook storage for the audio coder.Keywords
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