This question came up some 15 years ago. Here I give the link in which I described a useful method: https://maestronet.com/forum/index.php?/topic/311643-neck-flame/&tab=comments#comment-316555
Good luck!
And still no answer how many violins mr Zuger has made with his own concept. He may have put hundreds of hours in making instruments but maybe none has come to a playable instrument?.
Watched the video of the sound comparison on cello but did not recognize real differences.
Though I'm wondering if the complete set of strings is re-installed on an other tailpiece how many things have changed than? Is the bridge position exactly the same?
There might be more variables in this game.
If one is visiting an expert for instrument valuation they never play on the instrument!
All what they do is looking, pushing, knocking and tapping. Finally there will come out a value based on these 'variables'.
How valuable is this? Does it mean anything?
Thanks Craig.
The reason of my question was that I had a big doubt if one can predict the sound with reasonable accuracy of an instrument (that is not strung) just by simply knocking and / or tapping somewhere on the body. Well, it seems to be possible as go_oa wrote. Of course the best test is to setup the whole thing and play the instrument.
What if the investigator is blinded and cannot see how the construction is done. Would that influence the result?
Does that mean that tapping on the surface of a violin without strings, bridge, tail piece etc. it will be very difficult to predict the outcome if assembled?
But what if there is no measuring device like Audacity or something like that.
Is it still possible to discrimininate between two instruments just by tapping on the surface and listening?