7

374 Chapter 9 Audio Window
Pre Attack Time
The Pre Attack Time parameter allows you to add a defined amount of “pre-roll” to the
beginning of all Regions created by the Strip Silence process. High threshold values
prevent any amplitudes with slower attack times from being “chopped”. This function is
useful for non-percussive material such as; vocals, wind instruments, strings, and so on.
The units are shown in seconds. The smallest division is one tenth of a millisecond.
Overlaps are permitted—the pre-delayed start point of a Region can extend back to
the end of the previous Region—but only if the threshold value is not exceeded.
Altering the Pre Attack Time has no effect on the Anchor position, or the absolute
position of the audio data on the sequencer time axis.
Post Release Time
Post Release Time allows you to define an automatic release time for the end points of
all Regions. The units are shown in seconds. The smallest division is one tenth of a
millisecond.
You can use this function to avoid cutting off amplitudes that fade out gradually
(particularly if you have set a high threshold value). As examples; cymbals, open hi hats,
snares with long reverbs, vocals, and so on
The Post Release Time parameter does not allow overlaps. This means that the Region’s
end point cannot extend beyond the start point of the following Region.
Adjusting the Post Release Time does not affect the Anchor position, or the absolute
position of the audio data on the sequencer time axis.
Search Zero Crossings
If the Search Zero Crossings option is active in the Strip Silence window, the Region start
and end points are always automatically snapped to the nearest waveform zero
crossings.
Click the check box, to toggle the automatic positioning to zero crossings on and off.
Other Strip Silence Functions
Replacing a Region in the Arrange
If you are editing a Region being used in the Arrange window, you can open a dialog
window by clicking OK in the Strip Silence window (or by pressing Return).
If you want to replace the Region in the Arrange with Regions created by the Strip
Silence function, click Replace or press Return. This ensures that the relative timing of
the individual audio segments remains unaltered. Listen to the results, and if you’re
unsatisfied, Undo it!
If you only want the new Regions to appear in the Audio window, click No. You can
then drag them individually into the Arrange window, in the usual way.