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MP3 encoders of varying quality
are available for all platforms. The Fraunhofer
IIS labs codec is the best compression algorithm
and is widely used in commercial encoders. There
are a variety of shareware encoders available but
many do not implement the highest standard of perceptual
noise shaping. As a result the upper harmonic structure
of MP3’s produced by these programs is inaccurate.
In some tests listeners are
unable to tell the difference between CD-quality
audio and high bit rate perceptual noise shaping.
Others swear that the difference between the two
is night and day. The arguments for and against
compressed audio are ongoing.
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