Specifications

Appendix B: TDM Mixing and DSP Usage 607
Plug-In Features
Standard Surround and Stereo Mixers
(Pro Tools HD-Series Only)
Both the Surround and Stereo Mixer plug-ins
provide the following:
◆ 24-bit digital output, from an audio interface
output or Bounce to Disk. Mix level scaling
stores 48-bit results, using a 56-bit accumulator
for maximum precision.
◆ 48 dB of mix headroom.
◆ Output clip indication.
◆ Multichannel mixing formats for surround
(Surround Mixer only).
Surround Dithered and Stereo Dithered
Mixers
(Pro Tools HD-Series Only)
Both the Surround Dithered and Stereo Dith-
ered Mixer plug-ins provide the following:
• The same features as the standard HD Stereo
and Surround mixers, with the addition of non-
correlated dither to any output or bus send.
Surround and 24-Bit Optimized Mixer
(Pro Tools MIX-Series and Pro Tools|24 Only)
Both the 24-bit Optimized Mixer and the Sur-
round Mixer plug-ins provide the following:
◆ Optimized performance for recording and
mixing 24-bit audio.
◆ 24-bit digital output, from an audio interface
output or Bounce to Disk. Mixing level scaling
stores 48-bit results, using a 56-bit accumulator
for maximum precision.
◆ 30 dB of mix headroom.
◆ Input and Output clip indication: Master
Fader meters simultaneously indicate clipping
at both the input summing stage and the output
level stage.
◆ Multichannel mixing formats for surround
(Surround Mixer only).
16-bit Optimized Mixer
(Pro Tools MIX-Series and Pro Tools|24 Only)
The 16-bit Optimized Mixer provides:
◆ Optimized performance for recording and
mixing 16-bit audio.
◆ 24-bit digital output mix result from an audio
interface output, or when bouncing to disk
◆ More mixing channels (On TDM systems, 36
x 2 mixing channels can be created per DSP)
◆ 18 dB of mix headroom.
◆ Output clip indication: Master Fader meters
indicate clipping at the input summing stage
only.
Switching TDM Mixer Plug-Ins
To Switch TDM mixer plug-ins:
1 Quit Pro Tools.
2 Open the DAE Folder. The DAE folder is in-
stalled at the root level of the System Folder.
3 Open the “Plug-Ins (Unused)” folder, locate
the Mixer plug-in that you want to use, and drag
it to the Plug-Ins folder.
4 Open the Plug-Ins folder, locate the mixer
plug-in version that you no longer want to use,
and drag it to the “Plug-Ins (Unused)” folder.
5 Launch Pro Tools.