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Audio Coding

All lossy source coding techniques can be interpreted as vector quantization (VQ) with variable length coding 2. The coding scheme used in this coder uses an orthonormal transform (see 4.1.3) as a fixed codebook for vector quantization of MDCT (see 4.1.1) transform coefficients. Variable length coding is done by a number of Huffman codes on the VQ coefficients.

Before I can move on to the actual coding, I introduce the transforms used in the coder.

Figure 7: A schematic view of the coder.
\includegraphics[width=6in]{eps/coder.eps}



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Download bosse.pdf

``An Experimental High Fidelity Perceptual Audio Coder'', by Bosse Lincoln<bosse@ccrma.stanford.edu>, (Final Project, Music 420, Winter '97-'98).
Copyright © 2006-01-03 by Bosse Lincoln<bosse@ccrma.stanford.edu>
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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