I expect change in timbre, but not independent of intensity and all that changes with a difference in hammer speed. If all they are saying is that there is a c

I expect change in timbre, but not independent of intensity and all that changes with a difference in hammer speed. If all they are saying is that there is a change in timbre tout-court, then it’s trivial. If they’re saying one can change the timbre while keeping the intensity constant, then I have issues.