Akai MPCX User Manual page 120

The Fade In process sets a fade-in between the start point and
end point. The following types are available:
Linear fades the audio in with a linear curve—a straight line
between the start and end.
Log fades the audio in with a logarithmic curve—quickly rising
at the start and flattening out towards the end.
Exp fades the audio in with an exponential curve—slowly rising
in the beginning and growing steeper towards the end.
The Fade Out process sets a fade-out between the start point and
end point. The following types are available:
Linear fades the audio out with a linear curve—a straight line
between the start and end.
Log fades the audio out with a logarithmic curve—quickly rising
at the start and flattening out towards the end.
Exp fades the audio out with an exponential curve—slowly rising
in the beginning and growing steeper towards the end.
The Pitch Shift process changes the pitch of the sample without
changing its length. This lets you set the sample's pitch to your
sequence without affecting the sample's tempo or duration. You
can adjust it up to 12 semitones, up or down. Keep in mind that
the audio quality may decrease at more extreme settings.
The Time Stretch process lengthens or shortens the sample
without changing its pitch. This is useful for matching the durations
of two samples with different pitches. You can enter the original
tempo of the sample and the desired tempo after processing.
Use the Beat field to set the desired value number of beats.
Use the New Tempo field to set the new tempo. The Ratio field
will then automatically show the time stretch factor.
Alternatively, to adjust the ratio instead, use the Ratio field to
set the desired ratio. The New Tempo fieldwill then change
automatically based on the new time stretch factor.
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