M-AUDIO Pro Tools Recording Studio - Manual (Page 794)

Pro Tools Reference Guide 776
Polyphonic
The Polyphonic plug-in is a general, all-purpose
algorithm that is effective with a wide range of
material. For complex loops and multi-instru-
ment mixes, use the Polyphonic plug-in. The
Polyphonic plug-in supports region-based pitch
shifting.
Follow
Selecting the Follow option enables an envelope
follower that simulates the original acoustics of
the audio being stretched. Click the Follow but-
ton to enable or disable envelope following.
Window
The Polyphonic plug-in provides a single con-
trol for adjusting the analysis window size for
TCE processing. Experiment with adjusting the
Window size for different types of material until
you achieve the best results. The following table
provides some recommended Window sizes for
different types of material.
Rhythmic
The Rhythmic plug-in is best suited to material
with clear attack transients, such as drums. The
Rhythmic plug-in supports region-based pitch
shifting.
Decay Rate
The Decay Rate control determines how much
of the decay from a transient is heard in the pro-
cessed audio when time stretching. When the
Rhythmic plug-in is selected, any gaps between
transients resulting from time stretching are
filled in with audio. The Decay Rate determines
how much of this audio is heard by applying a
fade out rate. Adjust the Decay Rate up to 100%
to hear the audio that is filling the gaps created
by the time stretching with only a slight fade, or
adjust down to 1.0% to completely fade out be-
tween the original transients.
The Polyphonic plug-in is the default plug-
in for previewing and importing from Digi-
Base browsers or the Region List.
Elastic Audio plug-in: Polyphonic
If you frequently work with distinct types of
material, you may want to find the best
Window settings for each type of material
and save them as plug-in settings for quick
and easy recall.
Type of Material
Recommended
Window Size
General purpose 30–40 ms
Percussive 20 ms or lower
Pads and other legato
material 60 ms or higher
Elastic Audio plug-in: Rhythmic