Paul: This is out of (or at least on the very edge) of my realm of understanding but I think you might have to get a different string if it is a longitudinal mode vibration. I have Jim Ellis' book about this but it's at home. If you haven't found the information by the time I get home I'll check it. dp David M. Porritt dporritt at smu.edu -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Paul Chick (Earthlink) Sent: Wednesday, June 13, 2007 7:46 AM To: 'Pianotech List' Subject: RE: High overtone David and others: if the pitch change technique works or diminishes the problem, what would be the next step to keep the overtone diminished or better nearly inaudible? Paul C Subject: RE: High overtone As someone else mentioned this sounds to me like a longitudinal mode frequency. Change the pitch of the note and see if the pitch of the whine changes or if it goes away. dp David M. Porritt dporritt at smu.edu
This PTG archive page provided courtesy of Moy Piano Service, LLC