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FS4 Frame Synchronizer/Converter v1.1
3.0 Mix Down 1
Mode
This parameter activates the Mix Down mixer, and selects either 5.1 or 7.1 mix down
mode.
When set to 5.1 or 7.1 Channel Mode, additional menus follow that are used to select the
source of the incoming multi-channel audio, adjust the level of each of the incoming
channels routed to the Left and Right output channels, and adjust the level of the Left
and Right output channels.
About Mix Down Mode
Multi-channel audio uses more than two speakers to represent the sound field.
Figure 29. Multi-Channel 5.1 and 7.1 Speaker Positions
Multi-channel audio, typically embedded in an SDI signal, can be passed through the FS4
converter unchanged. The multi-channel sound can also be mixed down to stereo, using
the two Mix Down Modules built into the FSI-X Audio Processor.
The default 5.1 to 2 ch. mix-down equation is:
Left Ch Output = LF + (-3dB * CTR) + (-3dB * LR)
Right Ch Output = RF + (-3dB * CTR) + (-3dB * RR)
The default 7.1 to 2 ch. mix-down equation is:
Left Ch Output = LF + (-3dB * CTR) + (-3dB * LS) + (-3dB * LR)
Right Ch Output = RF + (-3dB * CTR) + (-3dB * RS) + (-3dB * RR)
These default settings can be adjusted using the front panel menus or web interface.
NOTE:
The LFE channel is not used in the stereo mix down output, but is passed through the FS4
audio routing matrix.
The Mix Down outputs are available as inputs to the FS4 audio matrix and can be
mapped to any audio output.
Off (default)
5.1 Channel
7.1 Channel
Mix down feature is turned off.
Selects 5.1 mix down mode.
Selects 7.1 mix down mode.
5.1 Speaker Positions
RR
Right
Rear
LR
Left
Rear
RF
Right
Front
CTR
Center
LF
Left
Front
Listener
7.1 Speaker Positions
RR
Right
Rear
LR
Left
Rear
RS
Right
Surround
LS
Left
Surround
RF
Right
Front
CTR
Center
LF
Left
Front
Listener