User Manual

Page | 259
Secondary audio busses:
Actually, beyond the primary busses
mentioned here, TriCaster maintains
a large number of secondary internal
busses.
For example, the Solo switch for each
input (and output) is actually a ‘send’
that adds sound to a ‘Solo bus’.
Likewise, the IsoCorder™ module (on
supporting models) permits discrete
recording directly from the
unmodified audio input associated
with any single video source; really,
this constitutes another up to eight
additional audio busses.
The controls in this group determine
output routing of the stereo pair(s)
comprising the input group. Switches
let you send channels A and B to
different internal audio buses
maintained by TriCaster.
When present, channels C and D can be
separately routed. Let’s talk about what
an audio bus is and how it is useful
before proceeding.
BUSSES AND OUTPUTS
Consider a very basic audio mixer. Its
main audio signal path, from input to
output, is properly called the ‘master
bus.’ Sound supplied to one or more
inputs is placed on this master bus (in
the jargon of audio processing, this is
called a ‘send’), which ultimately flows to
output connectors.
Slightly more advanced mixers often provide more than
one ‘send’ for individual inputs. For example, the sound from
all inputs may be sent to the master bus, comprising the ‘master mix’. A different
mix, sometimes called a ‘sub-mix’, might also be created by sending certain signals
to a secondary (‘auxiliary’, or ‘Aux’) bus.
Hint: A secondary mix, prepared on an Aux bus, can serve many purposes. For
example, you might wish to record a mix with all sound from talent microphones but that
excludes any sound effects or music.
Let’s summarize what we have learned so far: A ‘send’ pipes audio signals from an
input to a discrete pathway called a ‘bus’. Multiple sends can be used to place sound
from a given source onto one or more internal busses. OK, what else should we
know?