In a message dated 3/15/2009 3:09:38 P.M. Pacific Daylight Time, pianoguru at cox.net writes: Dale Erwin’s practice of measuring hammer movement for a predetermined key movement is much superior for determining the ratios. When this came up a couple of months ago, I pointed out that the weakness in this (which in Dale's method used only a fixed, limited portion of keystroke) lies in the (unpredictably) changing ratios as the action goes through its motions. I prefer to use the whole keystroke, using a fixed setup of 1.75 inches blow (only for measurement - I might change it later); .040 aftertouch (ditto), and an otherwise regulated note, to see what kind of dip it produces. I think this gives me a more accurate feel for the whole distance ratio, and has the advantage of using larger movements which I think increase the accuracy. Bob Davis **************Need a job? Find employment help in your area. (http://yellowpages.aol.com/search?query=employment_agencies&ncid=emlcntusyelp00000005) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090315/75d39152/attachment.html>
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