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Vista 9 Digital Mixing System
5-22 Au
Date printed: 28.0.0 SW V4.5
5.3.2 Touch & un-Touch Events
Another crucial, but easy to understand concept is that of Touch and Un-
touch. Au is a very tactile system and relies on physical actions for
efficient operation. Faders and encoders are touch-sensitive and can be made
to respond in different ways depending on the mode and operation being
performed. Switches and automatable GC items are not sensitive to physical
touch, but their actuation can generate similar messages as faders and encod-
ers.
To­uch Events The physical touching of a fader or encoder produces a ‘Touch Event.’ Ac-
tuating an automatable switch or GC item may also generate a Touch Event,
depending on the current mode.
Un-to­uch Events
The physical release of a fader or encoder produces an ‘Un-touch Event.’
Automatable switches and GC items may also generate an Un-touch Event,
depending on the current mode.
Events and Auto­To­uch+ In most cases, Events come in Touch and Un-touch pairs…that is a Touch
followed by an Un-touch. An example would be touching a fader, moving
it for a short period of time, and then releasing it. When the fader was first
touched, a Touch Event will be sent and when released an Un-touch will be
sent. Au will either use both Events, ignore both Events, or suppress
one or the other. Details of how these events are used and the operations this
makes possible are discussed throughout this document.