Good data, thanks Doug.
In an allied vein;
Here at the Musical Instrument Museum there is a calliope with real brass horns being played. I'm not just sure how the machine replicates chops to make it go, because it sounds a bit dull.
However, that tech could be improved and used to excite a euph at any particular pitch to see just when & where any unwanted mechanical resonance occurs. This could lead to advantageous changes in design, allowing objective empirical observations when 'held' in a playing position without relying on human 'power' to do it.
The engineer in me surfaces again...
Dennis