February 2007
Intermediate to advanced
464 pages
14h 40m
English
Content preview from Audio Signal Processing and Coding
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3.7 SUMMARY
This chapter covered quantization essentials and provided background on PCM, DPCM, vector quantization, bit allocation, and entropy coding algorithms. A quantization–bit allocation–entropy coding (QBE) framework that is part of most of the audio coding standards was described. Some of the important concepts addressed in this chapter include:
- Uniform and nonuniform quantization
- PCM, DPCM, and ADPCM techniques
- Vector quantization, structured VQ, split VQ, and conjugate structure VQ
- Bit-allocation strategies
- Source coding principles
- Lossless (entropy) coders – Huffman coding, Rice coding, Golomb coding, and arithmetic coding.
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