Hey, All, Well, I hope everyone hasn't completely forgotten about this thread. A couple of months ago there was a discussion of sorting shanks by pitch vs strike weight. Albert Picknell took some measurements on a set of Renner shanks and I offered to do some data analysis. My summer was pretty hectic and I just now got around to doing the analysis. A more complete report is attached, but here is the bottom line: Pitch and SW aren't related much at all. I was a little surprised at this, but I looked at it every way I could think of and the lack of correlation was consistent. According to this data, whatever factors influence the pitch we hear when we tap or scratch a shank, the mass is not particularly important. To say it another way, if you sort a set of shanks by SW it's different from sorting them by pitch. Statistical methods can't say whether one sorting method is better than the other, or even if "better" is a meaningful concept here. They also can't say whether one sorting method is more or less likely to get you the particular results you want with a particular piano. This much is very clear, however: pitch and SW are different things. The attachment goes into some of the gory details for anyone who is interested. If anyone wants to pursue this and furnish more data or suggest different ways of taking measurements, I will be happy to do more analysis. I will try to do it in a more timely manner in the future. If you have anything for me, please contact me at ZahringerK at missouri.edu. Regrettably, I will no longer be a subscriber to the CAUT list; I have my hands full with graduate school. My best to you all, Ken Zahringer, RPT Used to be: Piano Technician School of Music University of Missouri But now I'm: Graduate Teaching Assistant Department of Economics University of Missouri -------------- next part -------------- A non-text attachment was scrubbed... Name: CAUT Data Analysis.doc Type: application/msword Size: 30208 bytes Desc: CAUT Data Analysis.doc Url : https://www.moypiano.com/ptg/caut.php/attachments/20080915/177ffd84/attachment-0001.doc
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