[pianotech] Aural Tuning, a third flat

[Jeff Deutschle]

Greg:



First, as others have mentioned, check to see if the pin block has separated
from the back.



Your real question is about beat rates. The theoretical beat rates would
change along with the base pitch by the magic number of the twelfth root of
two for each semitone. But any piano, and especially smaller pianos such as
the Acrosonic, will have beat rates that are different than theoretical
anyway. The chosen octave stretch and the chosen compromises for the tenor
break(s) will also change the beat rates.


On Thu, Jan 1, 2009 at 8:46 PM, Greg Livingston
<pianotuner440 at hotmail.com>wrote:

> Dear Friends,
>
> We have been told that the beat rate for A3-C#4 is about 9 bps; F3-A3 is
> about 7 bps; do these beat rates only apply when A4 is close to 440?
>
> If A3 on a neglected piano is closer to F#, are those beat rates the same?
>
> I recently tuned the most out-of-tune Acrosonic I've ever seen in 22 years
> of tuning.  I did my best and the piano sounds better than I'm sure it's
> sounded in years, but I didn't dare get the A anywhere near my 435 fork. I
> decided just to raise A4 a bit and tune it from that point.  Of course, if
> it slipped, it would throw everything off, but I had no other reference
> point.  I will tune it again in a few months.
>
> Can I use those traditional beat rates when the A is somewhere around 420?
> Just wondering...
>
> ___________________________________________________
> Gregory P. Livingston, Piano Tuning and Service 781-237-9178
> Piano Technicians Guild, associate member (Boston chapter)
>
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>
>
>
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-- 
Regards,
Jeff Deutschle

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