I’ve just spotted something unusual. I have a “Volume” rack made from just a fader that’s bound to incoming CC11 messages from my expression pedal, and most of my racks have this set as an embedded rack as the last stage before heading to the rack audio out.
What I’ve noticed is that if sound is flowing through any of these embedded Volume racks, the green output activity LED flashes as expected, but they also do for all other similar Volume racks in other racks elsewhere in the song, whether or not sound is passing through them or not. I’ve tried renaming one of these embedded racks, and it still does the same thing. How are these racks connected, and why would they do this?
The green indicators on the racks indicate MIDI input and output activity (not related to sounds levels at all). Which one is lighting up - the input or output - and is it possible the rack is actually sending/receiving MIDI?
Ok I have some more information. In the situation I was seeing it with, the activity indicator was flashing on a rack with no MIDI routes in or out, and the rack had no bindings. I even disconnected the audio route into it, and the flashing continued.
But I think I’ve found the culprit. In my background rack I’m routing the MIDI input from my controller to the onscreen keyboard (just for visual feedback). But that seems to cause the output activity indicator of one or more racks in the song to flash, on reception of MIDI on the port bound to the on-screen keyboard. I created a song with about 20 racks, none of which were connected with MIDI or audio routes, and when I play notes, 4 of them had flashing output activity indicators. When I disable the background rack binding to on-screen keyboard, the indicators stop flashing.
Ah ok, I see what’s happening. A rack MIDI activity indicator lights up if any of it’s MIDI ports has activity. Because a rack considers the environment ports in the set of ports, any activity on those ports will light up those indicators.
Probably the correct fix is to only show activity on it’s own MIDI ports, or ports that are actually connected to.
It’s kind of a catch 22. You only want to see activity for ports your connected to, but before you’ve made any connections you’d expect the input indicator to light up.
