Hello Jim, You will found this in a very interesting book is "FIVE LECTURES ON THE ACCOUSTICS OF THE PIANO" Edited by Anders Askenfelt Publications issued by the Royal Swedish Academy of Music #64 Stockholm 1990 It is five lectures given at a public seminar at the Royal Institute of Technology in Stockholm May 27, 1988 Illustrated with sounds examples on a C6D Contents : - Piano Design Factors - their i,nfluence on tone and accoustical performance (where you can see pictures of the sounboard modes) by Harold A. Conklin Jr. - From touch to string vibrations Anders Askenfelt & Eric Jansson -The hammer and the string Donald E.Hall -The coupled motion of piano strings Gabriel Weinreich -The strings and the sounboard Klaus Wolgram ISBN91-85428-62-0 - I baught it at E. BOCHINSKY (all) Bye Isaac OLEG Paris JIMRPT@aol.com wrote: > > Ron; > I remember reading an article in the Journal sometime back where the > author, I don't remember who :-( , said something similar. In the way of > research they put iron filings/dust on the soundboard and excited the board > with a transducer/speaker arrangment. If I recall correctly the patterns > formed by the filings assumed shapes roughly equivalent to the shape of the > board and the size of each node (?) was in proportion to the area of the > board the filings were on. > If you haven't seen that article perhaps someone else on the list will have > and can let us both know when it was. After some of the discussion this past > year, on boards, I would like to read it again myself. > Jim Bryant (FL)
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