User guide

Tracktion 4 Reference Manual
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Below the “Scanning and Sorting” button, you will also nd the following three options:
Always check for new plug-ins at start-up: This option sets whether Tracktion should look for new
plug-ins when starting up. When disabled, you will need to initiate a manual rescan after installing new
plug-ins. Tracktion may open faster when this option is disabled, however.
Enable Rewire: Selecting this option activates support for ReWire applications, if any are installed.
Chapter 3.4 discusses using ReWire applications with Tracktion.
Add low level noise to avoid denormalisation: Denormalisation happens when processors are re-
quired to process numbers that are two small to work with in an optimal manner. Typically numbers
need to be extremely small to cause a processor to denormalise, but different processors have differ-
ent thresholds though, and certain Pentium 4 processors have a much higher than usual threshold.
Often these low numbers occur when processing the tails of reverbs, and delays, as the values used to
represent audio become increasingly small as the reverb/delay tail decays. If you notice that your CPU
usage tends to spike unexpectedly at certain points in an edit, even if there seems to be little going on
at that point, this is probably denormalisation. The best approach if you experience denormalisation is
to determine which plug is causing the spike by isolating them one by one, then contacting the plug-in
developer. This option can sometimes help though, as it adds a small amount of noise that serves to
raise the values representing the low level audio over the threshold of denormalisation.
2.5 : Loop Settings
Settings related to your loop libraries can be managed from the loop settings group on the settings
page (Fig. 2.5.1).
User loops path: When you create your own loops, they will be exported to the path specied in this
eld.
Loop directories: For Tracktion to be able to categorize your loop les, it needs to know where they
are located. This list shows the directories in which Tracktion expects to nd loop les. These directo-
ries, and all of their sub-directories, are searched for loop les. You can double-click on entries in this
list to edit them. In addition you can also add and remove entries in this list with the buttons below:
Remove path: Click this button to remove a path entry from the search list.
Add path..: This option allows you to add a new path to the search list. When this button is clicked,
Tracktion will display a browse for directory dialogue box. Navigate to your loop les directory, and
click “OK.”
Figure 2.5.1