Abstract
Lossy compression schemes can be based on a source model, as in the case of speech compression, or a user or sink model, as is somewhat the case in image compression. In this chapter, we look at audio compression approaches that are explicitly based on the model of the user. We will look at audio compression approaches in the context of audio compression standards. Principally, we will examine the different MPEG standards for audio compression. These include MPEG Layer I, Layer II, Layer III (or mp3) and the Advanced Audio Coding Standard. As with other standards described in this book, the goal here is not to provide all the details required for implementation. Rather the goal is to provide the reader with enough familiarity so that they can then find it much easier to understand these standards.
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