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I’m reading this as two different requests. If you want to scale H9 parameter ranges to a full MIDI CC range of 0-127, you can do that. Set the MINVAL and MAXVAL directly to a parameter [KB0 – KB9]. Configure or LEARN Activate to the same incoming MIDI CC message. I’ll add a couple of caveats to this approach:
- The parameter mappings are global; not per-preset. So, a Wah sweep in one preset might be a pitch change in another; both limited to the minimum & maximum range limits.
- ACTIVATE is going to kick in from CC value 64-127; no matter what. Whatever Wah sweep range you want to continue will also be limited to 64-127. Effectively, you’re working mid-pedal-to-toe on the physical pedal.
- Any time you venture near midpoint, on the footpedal itself, you run the risk of bypassing the H9.
The other approach: scaling MIDI CC range to a full H9 parameter range 0-100 (or, as appropriate). Most often, that’s a property of the MIDI controller itself. I have seen some self-contained synths and rack units that scale both ‘in & out’, but don’t recall any pedals that do. That will still limit what you want to accomplish to the upper half of the physical pedal sweep.
I use a MIDI Solutions Event Processor Plus for things like this. There are probably other hardware options on their site [Filter; Pedal Controller] that would get you where you need to go; simpler, and slightly more cost effective. The EPP is highly configurable to most any kind of MIDI message processing, though.
The incoming, full-range MIDI CC message can be split into different CCs; unique ranges, converted to another MIDI message type, etc. In your example, ACTIVATE could be 8-127 [leaving a 0-7 value as a ‘dead spot’ for bypass]. That leaves a much wider pedal sweep for wah frequencies. But that’s a basic example. The EPP can be customized to output almost anything that you can dream up, as nearly-simultaneous, serial MIDI ‘events’.