[CAUT] pitch rise

[Barbara Richmond]

I forgot to mention that the unisons don't sour, the pitch just drifts up.

Barbara Richmond

----- Original Message ----- 
From: "Barbara Richmond" <piano57 at insightbb.com>
To: "College and University Technicians" <caut at ptg.org>
Sent: Thursday, March 09, 2006 10:15 AM
Subject: Re: [CAUT] pitch rise


> Hi Richard,
>
> I was wondering about this myself.  Though I only noticed it when I 
> started
> tuning unisons "as I go."  The spot that goes up most in my case is the
> first treble section of a D on stage.  The piano is usually within a few
> cents (or less) of 440 before tuning.
>
> Barbara Richmond, RPT
>
>
> ----- Original Message ----- 
> From: "Richard West" <rwest1 at unl.edu>
> To: "College and University Technicians" <caut at ptg.org>
> Sent: Thursday, March 09, 2006 9:44 AM
> Subject: [CAUT] pitch rise
>
>
>> With the discussion of unison drift, I have a question which may be
>> related.  What is the cause for pitch rise while tuning?  I can
>> understand why the pitch might fall, especially if there's a significant
>> pitch change.  But I'm not talking about a radical pitch alteration.
>>
>> Here's the scenario.  I'm working on a newer or rebuilt piano with tight
>> pins and still relatively stretchy strings.  I'm trying to stabilize the
>> instrument, but it's being stubborn.  I'm having to be more aggressive
>> with my tuning technique, i.e., in order to settle the pitch I have to
>> first pull the string higher than I like in order to move the tight pin
>> and then allow the stretchy string to settle back to the pitch I want.
>> As I move up the piano, the pitch  behind me tends to creep higher,
>> sometimes to the point I have to retune the note below.  I'm not a
>> pounder, so I don't think that I'm beating the piano too hard.  I'm not
>> trying to pitch raise/lower the piano, just give it a good solid tuning.
>>
>> What can I do to prevent this "phenomenon?"  Does anyone else experience
>> this?  What is the cause?
>>
>> Richard West
>>
>>
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>
>
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