Mark, One does not overpull by semitones. On some euro pianos that is a recipe for broken strings, or worse, broken plates. One overpulls by a per-centage of how low a piano is when using an ETD. (Btw you might want to check out TuneLab-World.com) When a piano is more then a semitone low I usually pull up to pitch and then do a second per- centage overpull pass and then a fine tuning pass. Aggressive overpulling results in string noise I don't like to live with. I haven't done aural tuning for pitch raises. At A4 you know that the beat rate is worth so many cents...you can then calculate how many beats to go sharp of the pitch fork and then aurally tune out octaves and fill in. If you fill in the temperament first you will have pulled A4 down to pitch. You really aren't trying to be so precise on that first pass aurally anyway. Aural tuners will have more to add, perhaps some to correct. Andrew Anderson On Aug 5, 2009, at 5:23 PM, PianoForteTechnologies wrote: > Hello Joe > > Thank you for the reply. > I am at the moment only an aural tuner, due to etd’s being extremely > expensive for a South African with regards to the exchange rate, but > that’s my problem, could you explain in aural terminology and could > you explain at what point the strings become overstretched? How > many semitones can one overpull without the strings being > overstretched? > Thank you > Mark Davis -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20090805/31acd581/attachment.htm>
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