> Many people genuinely believe that they are superior to newly made violins and many scientists have tried to work out why.
Yes. The SBS TV program on violins that I watched yesterday (which prompted this thread) described two separate studies to see whether the violins of Stradivarius and Guarneri really did have a better tone. In one, the blind playing was live and there were about 50 audience members. All 50 quickly rejected the two modern violins, and they were almost equally divided between the Stradivarius and the Guarneri.
In a different blind playing shown on the SBS program, there was a web video and anyone who wanted could vote for their favourite violin tone. In this case the worst was a Stradivarius. There could be three reasons for this – one is that the sound would have to be reproduced through a speaker which distorts the sound quality, a second that the listeners weren’t connoisseurs, and a third that there are some 650 surviving Stradivarius instruments and some of them are unplayable. In particular, very few Stradivarius violins have original neck, bridge and chin rest. All this was illustrated on the SBS program.
From my previous knowledge, modern attempts to find out why the Stradivarius (and similar) violins have such a great tone included a study of how the side-to-side variation of thickness of wood on the back of the violin improved the tone, and how other thickness variations improved the tone, and how different wood treatments and varnishes improved the tone. I gather that Stradivarius tortured the wood within an inch of its life, resulting in the violin not being made from “wood with varnish” but rather “cellulose reinforced plastic”, which is much stiffer.