Auto Time Adjuster
Auto time adjuster (ATA), automates the measurement, calculation and setting of delays, to compensate for plug-in latency in Pro Tools v7.4 or higher (v8.01 or higher recommended).
Compensating for plug-in latency in Pro Tools LE/M-Powered v7 and v8 has always been a manual task due to the lack of automatic delay compensation (ADC). When dealing with plugin latency on audio tracks, it's normally necessary to work out the total latency of each track, calculate the differences, and then add offset delay to certain tracks to even up the latency by either nudging audio or using the included Time Adjuster plugin.
The process becomes less manageable when dealing with plug-in latency on effect sends, as nudging audio alone wont't resolve the problem; effects sends will still be late with respect to the audio tracks. To get around this, all audio tracks have to be bussed through at least one aux send. All sends then need to be delay compensated as a group using the included Time Adjuster plug-in. These extra layers of send latency result in an ever increasing amount of laborious calculations and settings being necessary to sync up all tracks in a session.
ATA uses the same routing as using standard Time Adjuster plug-ins, but dramatically speeds up the process by measuring all plugin and outboard latency using a short burst of audio. It then calculates and sets appropriate delays automatically for all ATAs in the session. ATA provides the tightest timing possible as it measures the actual latency caused by plug-ins. Whereas native ADC systems rely on the latency values reported by plugins - whether the figure is correct or not.
For extra flexibility it is also possible to enter the latency figures into each ATA manually, without pinging. All other ATAs in the session detect the change, and re-calculate and set their own delay times automatically, keeping your session perfectly in sync!
Though Pro Tools v9.x now has in-built ADC, users can still benefit from the larger latency limit of ATA (50,000 samples), the increased accuracy of measuring latency directly, and the ability to ping outboard.