A strum is only a strum because the synth doesn't stop the sound after receiving a note-off. A note-on with velocity of 0 could be interpreted as a signal for damping, ie ending the note.
I guess you can setup Erae to send out such messages. But which synth would react in the way I have described?
It's a synth I would write. Some of this behavior could be dumbed down and sent to less sophisticated synths/samplers. But the thing is: to trigger when a gesture goes past the string, ideally with a meaningful velocity parameter based on actual velocity as well as pressure. When the gesture is tracked, it has to see how its movement crossed the "strings". This is what happens in Polyharp. When we get API "zones" for Erae 2, I can totally do this myself.
A "string" version of the keypad or drum pad , with 1 LED wide bars could do this too.
I really just want what I do already on an iPad to be able to be done on the Erae. The advantage would be a bigger, better instrument surface, and polyphonic pressure.
Henry Lowengard
MIDI is pretty lousy at anything but button pushes and moving sliders, but perhaps a control that behaves like a string could be set up to send note-ons ( even in MPE mode) when the control is strummed, that is, when a touch crosses it, with associated values for location as velocity and actual velocity probably piggybacking on polyphonic pressure. Tapping the string would give a note-off, location again as velocity , and poly pressure would be pressure on the string independently sent. Just because it's a note-off message doesn't necessarily mean the note would go off, it might actually be a hammer-on. As I said, MIDI would need some fixing up to create a "strum" message and associated "damp" message.
I'll be able to fake this when there's an API, but having a way to lay it out as a string array in Erae lab would be good. see: https://polyharp.com