M-AUDIO Pro Tools Recording Studio - Manual (Page 885)

Chapter 40: Basic Mixing 867
AudioSuite Dither Some AudioSuite plug-ins can
automatically apply dither when processing.
You can select this option in the Processing Pref-
erences page.
The Use AudioSuite Dither option enables a pre-
set, noise-shaped dither for the following Digi-
Rack AudioSuite plug-ins:
• Gain
• Normalize
• Smack!
• Sonic NoNOISE
Dither in Fades and Crossfades In the Fades dia-
log (Edit > Fades > Create), the Use AudioSuite
Dither
option enables a preset, noise-shaped
dither.
Dither on Export and Import When you export
audio to a lower bit depth, or when you import
an audio file into a session that is at a lower bit
depth than the file, a preset, noise-shaped dither
is applied.
Dithered Mixer Plug-ins (Pro Tools HD Only)
Digidesign has developed a mixer that provides
all of the benefits of the standard Stereo Mixer
and Surround Mixer plug-ins, but also provides
uncorrelated dither on any summed output.
There are two Mixer plug-ins that feature dither
with noise shaping: Stereo Dithered Mixer and
Surround Dithered Mixer.
Noise Shaping
Noise shaping can further improve audio perfor-
mance and reduce perceived noise inherent in
dithered audio. Noise shaping uses filtering to
shift noise away from frequencies in the middle
of the audio spectrum (around 4 kHz), where
the human ear is most sensitive.
Noise Shaping is available in the Digidesign
Dither and POW-r Dither plug-ins.
For more information on AudioSuite Dither,
see the DigiRack Plug-ins Guide.
For more information on using the Dither in
fades and crossfades, see “Use Dither” on
page 517.
For more information about the application
of dither on export, see “Exporting Audio”
on page 287.
For more information about the application
of dither on import, see “Bit Depth Conver-
sion and Dithering” on page 277.
For more information on using the Dithered
Mixer plug-ins, see the Pro Tools|HD
Setup Guide.
For more information on using Noise Shaping,
see the DigiRack Plug-ins Guide.