Relevant to the discussion on Sound board mechanics... The rock in the pond, ripple example is found on page 7...grin.. in a bit of a different context then presented here. On page 8 I quote "The transverse wave of the string sets up a longitudinal wave through the thickness of the bridge so the energy reaches the sound board." And these in a book that, though titled "The Piano -- Its acoustics" has no chapter expressly dedicated to sound board mechanics. There is also an example at the end of page 9 and going through page 10 that clearly supports the influence of the longitudinal component in all this. An example which is very similar to Robins idea of a long slack wire touching the bridge and excited longitudinally by the butt end of a vibrating tuning fork. McFerrin explicitly terms this an example of longitudinal waves passing through a length of piano wire. Just thought you all might be interested in some more outside reference. :) This is fun actually.... I will look closer at all my books for relevant information. -- Richard Brekne RPT, N.P.T.F. Bergen, Norway mailto:rbrekne@broadpark.no
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