Block / Kill Specified MIDI channels

[RadekPilich]

To close this issue, the solution was slightly different.

I've used exclusive channel map in a slightly unintuitive way.

I've Summit on one of the input ports and as part of poly synths group on one of the outputs.

On Summit, I use channels:
- 6 for Part A
- 7 for Part B
- 8 for Global

I've therefore set up exclusive map with:
- 6 -> 6
- 7 -> 7
- 8 -> 8
- 16 -> 16

16 is unused channel, because some synths do stuff over it. All the other channels (1,2,3....) are used by other synths in the poly group.

So I take the exclusive channel map and put it on the Summit -> Poly routing.

Now when I change one of the 3 channels on Summit outside of 6-7-8 I can play other synths from Summit keybed and Summit doesn't play (with Local Off obviously).

When I keep channels set to 6-7-8 I play Summit (Local Off all the time).

Fortunately this doesn't affect other routings to the Poly group, therefore from other input - for example Novation SL mapped to Poly group, I can play / sequence all the synths in the Poly group based on the channel set on the SL.