Specifications
Chapter 4: Working with AudioSuite Plug-Ins 35
The Preview function routes audio to the spe-
cific outputs you have chosen with the Audition 
pop-up menu in the Outputs page of the 
I/O Setup dialog. Make sure you have config-
ured this option correctly for your system or you 
may not be able to hear previewed audio.
Before you use Preview, be aware that: 
◆ The performance of the Preview function de-
pends on the speed of your CPU. Faster comput-
ers preview AudioSuite effects better than slower 
computers.
◆ Regardless of how many tracks and regions 
are currently selected, the Preview button will 
audition only the first selected stereo track or 
the first selected pair of mono tracks.
◆ If you are using Region-by-Region processing 
mode, the Preview function will preview only 
the first region within a multi-region selection. 
To hear all selected regions, temporarily select 
Create Continuous File from the File Mode 
menu before previewing.
◆ The Preview function is affected by the 
AudioSuite Buffer Size option (on the Processing 
page of the Pro Tools Preferences dialog). See 
“AudioSuite Processing Preferences” on page 36.
Bypass
When Bypass is enabled, the selected audio is 
auditioned without AudioSuite processing. The 
Bypass button applies only to previewing. It 
does not affect actual AudioSuite processing. 
Process
Clicking this button begins AudioSuite process-
ing of the selected audio. Processing can occur 
during playback (though it may take slightly 
longer). Processed files are auto-named with the 
region or audio file’s name plus an acronym for 
the chosen AudioSuite process. 
New files are written to the hard disk specified 
for that track in the Disk Allocation dialog, or to 
the same drive as the original file if the region is 
not currently on a track. See “Auto-File Naming 
of AudioSuite-Processed Audio” on page 36.
Multichannel Processing
Most DigiRack AudioSuite plug-ins can process 
up to 48 channels of audio simultaneously.
Undoing AudioSuite Processing
If you have processed an audio selection nonde-
structively, the Undo and Redo commands let 
you undo the selected AudioSuite process. You 
can undo or redo an AudioSuite process during 
audio playback. 
For more information on using the I/O 
Setup dialog to configure your system’s au-
dio outputs, refer to the 
Pro Tools Reference 
Guide
.
When processing multiple regions of differ-
ent formats (mono and multichannel sur-
round, for example), all channels will be 
processed according to the channel format 
of the AudioSuite plug-in. Mono AudioSuite 
plug-ins can process stereo regions and ste-
reo AudioSuite plug-ins can process mono 
regions.
Undo is not available when a plug-in is con-
figured for destructive editing since the pro-
cess has already overwritten the source au-
dio file.










