User Manual
Chapter 5 Custom settings and output formats 79
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Target System: Compressor limits available settings to those appropriate for the target system.
If you’re encoding for use with DVD Studio Pro, choose DVD Video. Choose DVD Audio only
if you’re encoding for use in a DVD Audio authoring application. To remove the setting limits,
choose Generic AC-3.
•
Audio Coding Mode: Species the audio channels of the encoded stream. This setting also has
an Automatic button.
Audio Coding Mode
Automatic button
For example, “3/2 (L, C, R, Ls, Rs)” means three front channels (left, center, right), and two rear
channels (surround). “2/0 (L, R)” is essentially a standard stereo le. The audio coding mode
aects settings such as the available bandwidth and surround channel preprocessing. If you
click the Automatic button (next to the Audio Coding Mode pop-up menu), Compressor
makes its best guess at the intended audio coding mode, based on available source audio les.
3/1 channels 3/0 channels
2/2 channels
1/0 channels
(LFE option not available)
2/1 channels
2/0 channels
(LFE option not available)
3/2 channels
LFE
LFE LFE
LFE LFE
LFE
L
C R
Ls
Rs
L
R
Ls Rs
L
R
L
R
S
L
C R
S
C
LFE
L
C R
Note: In the Audio Coding Mode pop-up menu, “S” stands for a single rear surround channel,
and in this illustration, “LFE” stands for low-frequency eects (also known as the subwoofer). For
more information, see Assign les to surround sound channels on page 74.
•
Enable Low Frequency Eects: Select this checkbox to include the LFE channel in the encoded
stream (not available for 1/0 mono or 2/0 stereo).
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Sample Rate: Species the sample rate. All les intended for video and audio DVD authoring
must have a 48 kHz sample rate as required by the DVD specication. The 32 kHz and 44.1 kHz
sample rates are available only when Generic AC-3 is the target system.