CHAPTER 30. AUDIO FACT SHEET
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30.2.7
Freeze, Flatten
When tracks are
frozen
, the audio les that are created are 32 bit, which ensures that they
will not be lower quality than the audio heard prior to freezing. But there are some special
cases involving Freeze that result in non-neutral behavior and should be noted:
Frozen Arrangement View tracks can include audio material that extends beyond the
end of the clip itself, such as reverb tails and delay repetitions. Frozen Session View
tracks, however, are always exactly two loop cycles long, so any audio that extends
beyond two loop cycles during un-frozen playback will be cut off after freezing.
Time-based effects like reverbs and delays are processed in realtime for unfrozen clips,
so stopping playback during a reverb or delay tail will allow the tail to continue. In
contrast, frozen tails are rendered as audio, and so will stop abruptly during playback.
Any parameter automations are rendered as part of the audio le for frozen Arrange-
ment View clips. Frozen Session View clips, however, take a snapshot of all parame-
ter values at the Arranger's 1.1.1 position and retain them for the duration of the frozen
clip. This is analogous to the behavior with unfrozen clips; when playing normal clips
in Session View, any Arrangement automations are punched out until the Back to
Arrangement button is pressed.
Frozen clips are always played back with Warp on and in Beats mode, which means
they are subject to the same non-neutral behavior as any other Warped audio les.
Any devices with random parameters (e.g., the Chance control in the Beat Repeat
device) will no longer exhibit random behavior after freezing. This is because, as with
time-based effects, the random values that were in place at the moment of freezing will
be rendered as part of the new le, and will thus no longer be calculated in real-time.
Please note that the Flatten command replaces any original clips and devices with the
audio les created by freezing. When using this command, it is important to keep in mind
the special cases above
what you hear after freezing is exactly what you will get when
attening, so if the results are not to your liking, be sure to unfreeze and make any necessary
changes to device parameters before invoking the Flatten command.
This procedure is tested by rendering the output of an audio track and comparing it to the
frozen audio from the same track via phase cancellation to ensure that the les are identical.
