False Beats in the Temperament Section

[deanslist]

Thank you all for your suggestions. I will be pursuing them shortly with some help. It definitely isn't the ceiling fan.  (I've already learned what that does <G>) From what you all have said and what Dave Campbell said in KC, the consensus is definitely leaning toward loose bridge pins and seating. The only reason I am iffy in tackling it by myself is because of the location.  A good portion of the bridge that I need to get to lies right behind the keybed. 

As for tuning with fast beating intervals, at this point I haven't developed the skill yet. My brain handles the slowers ones much better to tune, using the fast ones as checks. The pitch variations on some of these single strings is as wide as 1-2 cents, which means a 4-8 beat variation in this section of the piano. Even with the ETD, it's really tough to figure out where to put it. The upside is now I have had some serious practice at minimizing false beats in unisons. 

Thanks again! I'll let you know how much we're able to improve it. 

Sara Nash
Associate
Southeastern Pennsylvania


  ----- Original Message ----- 
  From: Gene Nelson 
  To: Pianotech List 
  Sent: Sunday, June 10, 2007 1:59 PM
  Subject: Re: False Beats in the Temperament Section


  It is unusual to find a piano that does not have some sort of false beat at A4.
  Aural tuners must have learned how to get around this problem.
  Have you tried tuning the a3-a4 octave as close as you can and then testing it with the 3rd-10th test? Are the false beats interfering with the 3rd-10th test? You can also try to set your etd on a different partial.
  You can also try ghosting.
  Similar if you are checking 4ths and 5ths - if you suspect that false beats are interfering then test them with the fast beating intervals. Usually false beats in the temperament section are slow and using fast beating intervals is a way around the problem.
  Gene Nelson
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