CHAPTER 10Low Bit-Rate Coding: Theory and Evaluation
In a world of limitless storage capacity and infinite bandwidth, digital signals could be coded without regard to file size, or the number of bits needed for transmission. While such a world may some day be approximated, today there is a cost for storage and bandwidth. Thus, for many applications, it is either advantageous or mandated that audio signals be coded as bit-efficient as possible. Accomplishing this task while preserving audio fidelity is the domain of low bit-rate coding. Two approaches are available. One approach uses perceptual coding to reduce file size while avoiding significant audible loss and degradation. The art and science of lossy coding combines the perceptual qualities ...
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