Specifications

Appendix A: DSP-Induced Delays in Mixing (TDM Only) 593
Using Plug-In Inserts
Using plug-in inserts on a track causes addi-
tional delay.
Channel Delay Indicator
On all systems, the Channel Delay Indicator in
the Mix window displays the total delay, in sam-
ples, incurred on the track from the use of any
TDM plug-in on that channel.
To see the amount of processing delay on a track
that uses plug-in inserts:
■ In the Mix window, Control-click (Windows)
or Command-click (Macintosh) the track’s Vol-
ume Indicator to toggle between Volume
(“vol”), Peak (“pk”) and Channel Delay (“dly”)
indications.
Using Sends and Hardware Inserts
When you send a track to another track and re-
turn it to a track (audio, Auxiliary Input, or Mas-
ter Fader), the following delays are incurred:
Using hardware sends also results in delays, as
described below.
Using Hardware I/O
When an audio interface is used on an insert or
(send), there is delay introduced by going
through the D/A and A/D converter pair (for an-
alog devices) or digital I/O connection (for digi-
tal devices) on the audio interface.
On systems that support Delay Compensation
(automatic) you can define a delay value for
hardware inserts in the I/O Setup dialog. See
“H/W Insert Delay Compensation” on page 84.
For specific information on the delay
amounts for DigiRack or Digidesign plug-
ins, refer to your
DigiRack Plug-Ins Guide or
Digidesign Plug-Ins Guide.
For information on delay indication when
using Delay Compensation (automatic), see
“Delay Compensation” on page 428
Sends delays for Pro Tools|HD systems
HD Mixer Sends Delay
Stereo Mixer Pre-fader send to
bus
10 samples
Post-fader send
to bus
8 samples
Surround
Mixer
Pre-fader send to
bus
8 samples
Post-fader send
to bus
12 samples
Sends delays for Pro Tools|24 MIX-series and
Pro Tools|24 systems
System Sends Delay
Pro Tools MIX-
series or
Pro Tools|24
Pre-fader send to
bus
3 samples
Post-fader send
to bus
6 samples