Universal Audio Apollo Software User Manual
Page 62
Apollo Software Manual
Chapter 3: Console Application
62
Buffer Size (Windows only)
This menu determines the audio interface hardware I/O buffer size. On Mac systems, the
I/O buffer size is changed within the DAW audio preferences.
PT Mode (Apollo & Apollo 16 only)
PT Mode facilitates Pro Tools’ Hardware Inserts feature by inserting NULL (empty) values
at inputs 1 & 2 so input/output numbering within Pro Tools is aligned. This setting also
optimizes Apollo’s I/O channels to accommodate the 32 I/O channels available in Pro
Tools.
PT Mode only affects operation with host audio applications that can address an audio
interface’s individual I/O. The setting does not affect use with Console.
See
for complete details about this feature.
Important:
Enabling PT Mode changes the driver I/O complement. Quit all audio
applications before changing the PT Mode setting.
Input Delay Compensation
Input Delay Compensation (IDC) maintains phase
alignment across Console’s analog and digital inputs
when upsampled UAD plug-ins are used. See
Delay Compensation in Console” on page 110
for a
complete explanation of this feature.
When enabling IDC, it’s usually best to start with the
Short value (100 samples – the default value) to mini-
mize latency.
A dialog will appear in Console if the compensation amount is exceeded on a channel.
If this occurs, either increase the IDC value or reduce upsampled plug-ins usage on the
channel to maintain phase alignment.
Note: Changes to this setting do not take effect until the DAW is quit.
Input Delay Compensation Values
Setting Name Extra Delay (samples)
Off
0
Short
100
Medium
200
Long
1000