M-Audio Pro Tools M-Powered 7 Quick Start Manual page 61

To Bounce to Disk:
Choose File > Bounce to > Disk.
1
Select any mono or stereo output or bus path
2
as the source for the bounce.
Select the File Type (such as WAV), Format
3
(such as mono or stereo), Resolution (such as 16-
bit), and Sample Rate (such as 44.1 kHz).
To create a mixdown that can be written to
an audio CD, be sure to select WAV, stereo
interleaved, 16-bit, 44.1 kHz.
If you are changing the sample rate of the
4
bounced file, choose a Conversion Quality set-
ting.
Click Bounce.
5
Using Dither on Mixdown
You should use a dither plug-in whenever you
are bouncing or mixing down audio to a lower
bit depth (for example, when mastering a 24-bit
session to 16-bit resolution for release on an au-
dio CD.)
If you are bouncing or mixing down audio for
reuse at the same bit depth (for example, for
transfer from one 24-bit capable system to an-
other), you do not need to dither the output.
It is preferable to use Master Faders instead of
Auxiliary Inputs for applying dither, because
Master Fader inserts are post-fader. With a Mas-
ter Fader, any changes to the track's Volume
fader will be processed by the dither plug-in.
To dither audio for mixdown:
Create a Master Fader and assign it to control
1
the output path for the audio you want to mix
down or bounce.
Insert the included DigiRack Dither plug-in
2
(or another dither plug-in) on the Master Fader,
after any other plug-ins or inserts on the track.
In the dither plug-in window, click the Bit Res-
3
olution button and select the destination bit
depth (20-bit or 16-bit).
In the dither plug-in window, click the Noise
4
Shaping button and select a Noise Shaping set-
ting. Type 1 is appropriate for mono files, and
Type 2 or Type 3 are appropriate for stereo files.
Choose File > Bounce to Disk to perform the
5
mixdown.
Sample Rate Conversion on Mixdown
When you specify a different sample rate for a
bounced file (for example, when mixing down a
session recorded at 48 kHz to 44.1 kHz for re-
lease on an audio CD), a Conversion Quality set-
ting becomes available in the Bounce to Disk di-
alog.
There are five possible Conversion Quality set-
tings, ranging from Low (lowest quality) to
TweakHead (highest quality). The higher the
quality of sample rate conversion, the longer it
takes to convert the bounced file.
For more information on using dither and
sample rate conversion when mixing down,
see the Pro Tools Reference Guide .
Chapter 4: Working with Pro Tools M-Powered 57