User Manual

WORKING WITH HOST AUDIO SOFTWARE
61
Streaming computer audio to and from the
on-board mixer
In the Routing grid, you’ll see mixer inputs across
the top of the grid, including Main, Monitor, Aux,
etc. (item 11 on page 15). These are output busses
from the 8A’s on-board mixer. To route one of these
mix busses to your host computer software, click
the grid at the intersection of the mix column and
desired computer channel row. Now, the mix bus
output will be routed to the computer via the
channel you selected.
Conversely, you can stream audio from the
computer into the mixer. Channels coming from
the computer are represented across the top of the
routing grid as inputs. To route a computer channel
to the mixer, click the grid at the intersection of the
computer channel column and the desired mix
input row. Now, that computer channel will be
routed to the mixer input.
Working with AVB network streams
Audio channels going to networked AVB interfaces
can be streamed to and from your host audio
software through the 8A connected directly to the
computer. For information about how to set this
up, see “Mapping computer channels to network
streams” on page 91.
Mirroring computer channels to multiple
outputs
Figure 7-6 shows an example of mirroring one
stereo audio stream from host audio software to
several outputs. In the example, computer
channels 1-2 are being sent to Phones L-R and
Analog 1-2. To route a source to multiple
destinations, click multiple boxes in its column,
(see computer channels 1-2 in Figure 7-6).
Combining multiple sources to one output
To merge (mix) any channels in the grid (computer
streams or otherwise), route them to mixer inputs
and then use the on-board mixer (“Mixing tab” on
page 16).
Routing grid tutorials
For further information about using the routing
grid, including many useful tips and techniques,
visit:
www.motu.com/techsupport/technotes/avbrouting
and
www.motu.com/avb
WORKING WITH ON-BOARD MIXING AND
EFFECTS
The 8A provides powerful mixing, EQ,
compression and reverb, which can operate hand-
in-hand with your host’s mixing environment. For
example, the 8A can serve as a monitor mixer,
routing channels to musicians, or it can serve as an
integrated extension of your host’s mixing
environment. You can even save a particular
mixing configuration as a preset for future recall.
For details, see “Mixing tab” on page 16.
LTC-TO-MTC CONVERSION
When connected to a Mac, your MOTU interface
can convert SMPTE time code (LTC) to MIDI
Time Code (MTC), allowing any MTC-compatible
host audio software to resolve to MTC.
LTC-to-MTC conversion can be done even when
the Clock Mode setting for the MOTU interface is
set to Internal (or any other setting). Note that the
Clock Mode setting does NOT have to be set to
LT C . In other words, the interface can convert LTC
to MTC even when it is not resolving its audio
engine to the incoming time code. This allows your
DAW host software to resolve to time code with fast
lockup response.
To set up LTC-to-MTC conversion:
1 Set the interface Clock Mode to Internal (or any
other desired setting).