> It's trivial to set up an experiment where you kick a single key with a solenoid and record the result. You can apply different velocity curves to the solenoi

> It's trivial to set up an experiment where you kick a single key with a solenoid and record the result. You can apply different velocity curves to the solenoid and see if there's any variation in timbre Absolutely. Most of my comment is arguing how it would be not really useful, though, because perceived timbre (a.k.a. the kind that matters) is by definition wholly subjective, influenced by surrounding notes, etc.