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Constrained-storage vector quantization in high fidelity audio transform coding

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2 Author(s)
W. -Y. Chan ; Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA ; A. Gersho

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

Published in:

Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on

Date of Conference:

14-17 Apr 1991