False Beats in the Temperament Section

[Gene Nelson]

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
  ----- Original Message ----- 
  From: deanslist 
  To: Pianotech List 
  Sent: Sunday, June 10, 2007 7:41 AM
  Subject: False Beats in the Temperament Section


  I'm looking for suggestions, guidance, admonitions, whatever, please. 

  My piano for practicing tuning (and playing) is a 3 year old Pearl River upright (UP 118E, 47" ). It has developed murderous false beats in the temperament section making aural tuning practice impossible. The only thing I can really practice aurally at the moment is minimizing false beats in the unisons. There aren't enough intervals clean to let me get anywhere. All 3 strings on A4 are funky.  On many strings I just can't read a pitch with a resolution greater than 1 cent because of the oscillation. Some have a larger oscillation. I noticed it is much worse when the humidity increases. This piano does have a DC system that is always plugged in and working. 

  Logically, I guess the first thing to do would be to seat the strings. This will be somewhat difficult because of the location bridge pins for these strings relative to the keybed. I have ordered Joe Goss' string seating tool to help with that. 

  If I can't get it resolved, I'll certainly find the money in the budget to get someone from my chapter to come in and work on it. 

  Thank you!

  Sara Nash
  Southeastern PA
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