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The AES3 outputs are active at all times. If the output is an SDI standard
(e.g. NTSC or 720p), then your unit will also embed the audio data into those
outputs as well. High quality sample-rate conversion is used to allow mixing
of multiple non-synchronous audio sources without noticeable degradation of
the audio quality.
The following diagram helps to explain how audio is routed and processed
internally.
As can be seen, four sub-menus give complete control over the audio
processing. The diagram also reveals which audio controls affect each
section of the processing – e.g. Adjust audio’s volume and delay has an affect
on all audio outputs, even if Adjust output’s audio-follow-video is turned off.
It can also be seen that there are 2 volume controls – firstly where the audio
comes into the unit (controlled by Adjust audio), and secondly for each
window where the audio can be controlled again and even muted (which is
similar to the way that the corresponding video window can be altered using
Max fade level).
In Switcher mode there is a further built-in volume control for performing audio
cross-fades, since Window B shown above is not active in this mode.
SDI2-1
Each input/output is a stereo audio channel.
8
8
8
A
B
Z
SDI1-1
SDI2-8
AES1
AES16
SDI1-8
8
32 channels
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