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9.2. The Codecs

In almost all cases, the alternatives to MP3 also use some form of perceptual codec, as described in Chapter 2. That means that all of these formats achieve their compression by discarding or reducing the amount of data representing inaudible sound (though the question of whether any sound is truly inaudible is still up for grabs; some diehard audiophiles maintain that even inaudible sounds contribute to music's overall atmosphere).

This section only covers alternative audio compression schemes and file formats; there are many noncompressed formats that aren't really of interest to us here.


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