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To create an MP3 you will need
an MP3 encoder and an
audio file in an appropriate
format. Once you have
an encoder there are
a few parameters you
need to set. The encoding
process requires that
you select the bit rate,
bit depth, and whether
the file is stereo or
mono. Most MP3's are
encoded at a bit rate
of 128 kbps. All encoders
have a selection for
bit rate anywhere between
20 and 320 kbps. The
higher the kbps the better
the sound quality and
the larger the file size.
When an audio file is
encoded at 128 kbps,
the dynamic range and
upper harmonic structure
is almost always notably
altered, making the file
sound artificial, especially
in classical or acoustic
recordings. When the
bit rate is increased
to 256 kbps the original
dynamic range and high
harmonics are better preserved.
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