Channel Switch Behavior
MIDI Keyboard control is designed as additional mechanism to trigger Directre Channel
Switches momentarily, in real-time. When MIDI notes are received from a keyboard or
sequencer lane, the Channel Switches may or may not change depending on the
current switch state. The following section describes these scenarios and the
mechanics of Directre switch behaviors.
Channel Control
Each Channel Switch can be closed (enabled) in one of three ways: via the Channel
Enable Button on the front panel, a single MIDI note in the POLY range, or a single MIDI
note in the MONO range. For example Channel 1 can be activated by clicking on the
Channel 1 Enable Button, by sending MIDI note C1, or by sending MIDI note D2. If the
Channel 1 Enable button is ON,
and
Directre receives a MIDI Note ON C1 message,
the channel switch simply stays on.
Provided that two single control events cause a
similar action, there is no apparent change to the switch states.
Multi Channel ON Overlaps
Because the POLY Keys and Channel Enable Buttons both serve to close multiple
channel switches, the two event types work in tandem to enable routings. For example
if POLY Keys C1 through F1 are pressed, channel switches 1 through 4 are closed.
Then by clicking on Channel Enable Buttons 5 through 8, channel switches 5 to 8 are
closed without affecting channels 1 through 4. Provided there are no overlapping event
conflicts between the POLY keys and Channel Enable Buttons, the two can work
together. However when there are overlaps in controls that conflict, certain rules will
determine the result.
Last Event Priority
Directre responds to the last event received from a MIDI source or the Channel Enable
Buttons, and in most situations this is how the outcome is determined for events which
may cause conflicting switch states. For example if Directre is receiving a MIDI NOTE
ON C1 message which causes Channel Switch 1 to close, and then the Channel 1
Enable button is disabled, the channel switch will open. The Enable Button OFF
change comes
after
the MIDI ON event, so
the last control event has priority over
channel switch control.
Channel Enable Buttons, POLY Keys, and MONO Keys function in groups of controls,
and the ‘Last Event Priority’ rule can function slightly differently based on event
arrangement. Channel Enable Buttons and POLY Keys work to close (turn on) multiple
switches simultaneously, while a MONO Key opens (turn off) multiple switches
simultaneously. If a group of POLY Keys are held, and then a MONO Key is pressed,
the MONO channel will close while all other channels are opened. When the MONO
Key is released, the POLY Keys and the Channel Enable Buttons states will become
active. If a MONO key is held first before a range of POLY Keys, the Last Event Priority
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