Hi, Ric. Thanks for the link - I have not yet read the article, but I will. It is a tradeoff, good word, between sustain and cleanness. It is interesting to push against the border between those two, to see where the limit lies. I used to be more absolute about it, but I'm loosening up a bit. I just find that there are times when a softer focus yields a pleasing effect. As to the Bluthner with/without aliquots, I won't hold my breath for the results of that experiment. :) - Mark Ric Brekne wrote: > Hi Mark and others. Some interesting stuff written on this thread for > sure. As to the below.... I have to raise my finger in the air in > question. It was my understanding that and increase in sustaing if > strings are slightly decoupled has been already shown to be true and > above question. Very similiar to the basic tradeoff between sustain and > power problems. Its not a matter of increasing or decreasing energy... > its a matter of how it is to be distributed through the system. I > suppose you have read the article by Gabriel Weinreich > http://www.speech.kth.se/music/5_lectures/weinreic/weinreic.html > This said... I believe that unisons in a very real sense can not ever > achieve a perfect coupled motion in the first place. There is always at > the minimum at least some barely discernable wavering. I wouldnt > necessarilly call this instability beating per se... but unisons are > never clean in the absolute sense that is meant in the physics models > drafted in such articles as the above. > > So just how much a tradeoff between sustain and power (unison cleanness > as it were in this instance) one can achieve is an open question as far > as I can see. > > As for the Bluthner extra string... I am entirely unconvinced it does > anything to increase sustain one way or the other. It can be used to > colour the over all sound of the unison and intervals. I've often > surmised it may have some affect of supporting crown slightly. But > increasing sustain ?? Well I've never carefully measured and then > removed the entire set of extra strings to find out... so I suppose I > should be cautious in making any declarations. > > Cheers > RicB > > -------------------------- > > Mark Schecter writes: > > OK. So the treble notes decay more quickly than lower notes, and we > would like to slow that decay, IOW increase the sustain time, and we > think maybe we can trick the piano into doing our bidding by "tweezing" > the unisons. I say that it doesn't work, and that no matter how we tune > or detune unisons, that the best we can do is _create the illusion of > greater sustain_. We can no more make the note last longer than the > input energy through the string-bridge-board-air makes possible, than we > can make water flow uphill. > _______________________________________________ > Pianotech list info: https://www.moypiano.com/resources/#archives >
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