A440 tolerances

[Farrell]

Significant digits. Scientific/mathematical concept. A440 technically means
closer to 440 Hz than 441 or 339, or between 339.5 and 440.5. If you want to
specify A440 and not 440.1 Hz, then you would need to indicate A440.0.

So, if you indicate on your invoice A440, as I do, you are technically
indicating that A4 could be tuned to a frequency of 440.43 or perhaps
339.579 or wherever between 339.5 and 440.5.

Terry Farrell

----- Original Message ----- 
From: "James Grebe" <pianoman@accessus.net>
To: <ilvey@sbcglobal.net>; "Pianotech" <pianotech@ptg.org>
Sent: Friday, November 05, 2004 8:20 AM
Subject: Re: A440 tolerances


> My invoice say Tuned Piano and I add the pitch after that.
> Jim
> James Grebe
> Piano-Forte Tuning & Repair
> Creator of Handsome Hardwood Caster Cups
> (314) 608-4137
> WWW.JamesGrebe.com
> 1526 Raspberry Lane
> Arnold, MO 63010
> BECOME WHAT YOU BELIEVE!
> pianoman@accessus.net
> ----- Original Message ----- 
> From: "David Ilvedson" <ilvey@sbcglobal.net>
> To: <pianotech@ptg.org>
> Sent: Thursday, November 04, 2004 4:03 PM
> Subject: Re: A440 tolerances
>
>
> > Wait a minute...your invoice says A440 on it so you better be tuning to
> > A440.   My invoices also say A440 but I'm not a purist....;-]
> >
> > David I.
> >
> >
> >
> > ----- Original message ---------------------------------------->
> > From: James Grebe <pianoman@accessus.net>
> > To: Pianotech <pianotech@ptg.org>
> > Received: Thu, 4 Nov 2004 13:57:46 -0600
> > Subject: Re: A440 tolerances
> >
> >>Sorry,
> >>I guess I would  have to say , it depends.  If it is a church or school
> >>then
> >>right on.  It is a judgment call, being honest with you.  Some clients
are
> >>more accurate than others.
> >>Is my answer a cop out? maybe
> >>Jim
> >>James Grebe
> >>Piano-Forte Tuning & Repair
> >>Creator of Handsome Hardwood Caster Cups
> >>(314) 608-4137
> >>WWW.JamesGrebe.com
> >>1526 Raspberry Lane
> >>Arnold, MO 63010
> >>BECOME WHAT YOU BELIEVE!
> >>pianoman@accessus.net
> >>----- Original Message ----- 
> >>From: "Don" <pianotuna@accesscomm.ca>
> >>To: "Pianotech" <pianotech@ptg.org>
> >>Sent: Thursday, November 04, 2004 12:35 PM
> >>Subject: Re: A440 tolerances
> >
> >
> >>> Hi James,
> >>>
> >>> You missed my point. You said A-440. Does that mean that A440.25 is
not
> >>> acceptable to you? Or A439.75? What is your own particular standard on
> >>> the
> >>> "tolerance"?
> >>>
> >>> At 12:04 PM 04/11/2004 -0600, you wrote:
> >>>>Hi Don,
> >>>>I do my best to leave it at A-440 and stable and explain the movement
it
> >>>>may
> >>>>have if it is a pitch raise.  Character is what you do when no one
else
> >>>>is
> >>>>listening.
> >>>>James Grebe
> >>>
> >>>>----- Original Message ----- 
> >>>>From: "Don" <pianotuna@accesscomm.ca>
> >>>>Subject: A440 tolerances
> >>>>
> >>>>> Hi James,
> >>>>>
> >>>>> Is that "exactly" A 440 or is there some "tolerance" built into the
> >>>>> figure
> >>>>> A440
> >>>
> >>> Regards,
> >>> Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
> >>> Non calor sed umor est qui nobis incommodat
> >>>
> >>> mailto:pianotuna@accesscomm.ca http://us.geocities.com/drpt1948/
> >>>
> >>> 3004 Grant Rd.
> >>> REGINA, SK
> >>> S4S 5G7
> >>> 306-352-3620 or 1-888-29t-uner
> >>> _______________________________________________
> >>> pianotech list info: https://www.moypiano.com/resources/#archives
> >
> >>_______________________________________________
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> >
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>
>
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