NewTek TriCaster 2 Elite (3 RU) - Manual (Page 190)

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An output may be physical, or virtual – i.e., it may involve a connector on the rear panel, or not. For example,
audio recorded internally does not require an output connector. Likewise, it may initially be analog or digital.
Note: Analog outputs 1 and 2 are permanently assigned to MASTER and AUX 1, respectively. In contrast, digital
(or ‘embedded’) outputs are configurable in the Output Config uration panel.
S UB -M IXES AND ‘M IX M INUS ’
At times you may require specially configured audio mixes. For instance – some installations call for sending
audio from one or more internal sources (such as a DDR or the Sounds player) to a secondary distribution
system. Alternatively, you may want a ‘clean’ output from one or more sources for use apart from the main
primary output mix.
Specialized sub-mixes of this latter sort are often referred to as ‘mix - minus,’ since one or more sources are
deliberately subtracted from the main program. Mix-minus capabilities can be invaluable for productions
like ‘phone - in’ shows. The remote caller needs to be able to hear the interviewer; but if you simply send the
primary mix back to him, he is forced to endure a late-arriving echo of his own voice. Needless to say, this
would be confusing and undesirable.
Suppose your interviewer is speaking into a microphone connected to channel 1 of Input 1 . The audio from
your interviewee is routed into Channel 2 . You could easily supply both to your Master bus for your program
output needs, but remove channel 1 from Aux 1 , and remove channel 2 from Aux 2 to provide mix minuses to
send back to the interviewee.
This approach eliminates annoying echoing, feedback and the like. Meanwhile, both participants can be
heard on the main
Program output. Also important, independent control and signal processing is provided
for each part of the pipeline.
M IX M INUS FOR E XTERNAL T ALK S HOW ® D EVICES
The Routing tab provides four 8x8 matrix routing panels for each input, allowing for more sophisticated
mixes than the example above. TriCaster supports 8 channel NDI output, so it’s actually possible to route a
unique mono mix-minus on each channel for a single Aux bus. A single NDI output can thus provide all of the
mix-minus needs for two Talkshow VS4000 systems.
Let’s consider a simpler example – configuring unique mix minus audio for return to a single VS 4000.
The example assumes that you have assigned Switcher inputs 13-16 to receive the four individual TalkShow
sources. We will use video MIX 2 to supply Program video for return to each TalkShow caller. And we will
assign AUX 1 as the Audio source for MIX 2 , assigning a unique (mono) mix minus to each of its four channels
to supply return audio for each caller.
• In the Output Configuration panel, assign Aux 1 as the Audio source for MIX 2 .
• In the Audio Mixer , open the audio configuration pane for Input 13 .
• Access the Routing tab, and click the Clear button above the Aux 1 routing matrix.