crystal User Manual
Version: 6.6.0/2
221/459
10. Audio Mix Engine
10.10.4 Surround (5.1) Downmix
"System -> Definition -> Parameter = Surround Downmix"
This branch of the 'Tree Definition' defines the downmix parameters to be used when a surround source is
routed to a stereo summing bus.
You may set up 5 sets of downmix parameters so that the operator may change the downmix according to
their requirements. Once selected, the downmix parameters are applied globally to all surround to stereo
assignments.
If a surround source is assigned to a mono bus, then the stereo downmix is converted to mono by
subtracting 3dB from, and then summing, the L and R channels.
Start by selecting "
System
->
Definition
" in 'Tree Definition' and the
Audio
tab. Scroll down to access the
"
Parameter
=
Surround Downmix
" options:
Parameter
Surround Downmix – reference name for the element.
Lf -> L
This is the amount of signal applied from Left Front to the Stereo Left output. Levels are entered in
dB.
Rf -> L
As above for Right Front.
C -> L
As above for Center.
LFE -> L
As above for LFE (Low Frequency Effect/Sub)
Ls -> L
As above for Left Surround.
Rs -> L
As above for Right Surround.
Lf -> R, etc.
Repeat as above but for levels to the Stereo Right output.
Select
Enter a control signal to make the downmix parameters active. If nothing is entered, then the first
set of parameters is applied.