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#2225320 - 02/03/14 06:56 PM tone generator  
Joined: Jan 2014
Posts: 10
Lchauvin Offline
Junior Member
Lchauvin  Offline
Junior Member

Joined: Jan 2014
Posts: 10
Is a tone generator a reliable pitch source for setting A440 on a piano? Is it allowed on the RPT exam?

Lance

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#2225379 - 02/03/14 08:50 PM Re: tone generator [Re: Lchauvin]  
Joined: Oct 2006
Posts: 2,539
David Jenson Offline
2000 Post Club Member
David Jenson  Offline
2000 Post Club Member

Joined: Oct 2006
Posts: 2,539
Maine
If it's a reliable tone generator, it's functionally the same as a tuning fork, so yes. I'd wager it's acceptable.


David L. Jenson
Tuning - Repairs - Refurbishing
Jenson's Piano Service
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#2225459 - 02/03/14 11:14 PM Re: tone generator [Re: Lchauvin]  
Joined: Dec 2012
Posts: 4,198
Ed McMorrow, RPT Online content
4000 Post Club Member
Ed McMorrow, RPT  Online Content
4000 Post Club Member

Joined: Dec 2012
Posts: 4,198
Seattle, WA USA
If you have a smart phone you can find A-440 on YouTube. If it is from a crystal source this is probably better than a tone generator. If the tone generator has a period average frequency counter with it that would provide accuracy.


In a seemingly infinite universe-infinite human creativity is-seemingly possible.
According to NASA, 93% of the earth like planets possible in the known universe have yet to be formed.
Contact: Ed@LightHammerpiano.com
#2226550 - 02/05/14 08:29 PM Re: tone generator [Re: Lchauvin]  
Joined: Jan 2010
Posts: 3,000
Mark Cerisano Offline
3000 Post Club Member
Mark Cerisano  Offline
3000 Post Club Member

Joined: Jan 2010
Posts: 3,000
Montreal, Quebec, Canada
For the exam, no matter which source you use, I would suggest asking to have it checked with whatever ETD they will be using to check your A4.

No need adding variables to the situation that may affect your mark unfavourably.

For my test, I found that my fork was 0.7 cents sharp, (after filing and calibrating it to my friend's Cybertuner, which he swore was accurate) but if I held it in my hand for a minute, it was bang on. So that's what I did.

1.4 cents is a fail, so 0.7 cents sharp with a 0.7 cents sharp fork, would have been a fail for me in that situation, where 0.7 cents sharp would have been 100% using an accurate source.


Mark Cerisano, RPT, B.Sc.(Mech.Eng), Dip.Ed.(Music)
www.howtotunepianos.com
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