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#618920 - 07/25/01 10:57 PM A440 Tone Generator
Chris A. Offline
Full Member

Registered: 06/01/01
Posts: 33
Loc: Ohio
Are self contained, small tone generators available to supply an accurate A440 pitch?

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#618921 - 07/29/01 08:54 AM Re: A440 Tone Generator
Rich Galassini Offline
Yikes! 10000 Post Club Member

Registered: 05/28/01
Posts: 10410
Loc: Philadelphia/South Jersey
Yes, Chris,

They are called tuning forks.

Seriously, there are many ways to do this. I have a Palm Pilot with a tuning fork program, there is the old accufork electronic tuning fork, or .......I guess there IS the old tuning fork. (and it never needs batteries)
_________________________
Rich Galassini
Cunningham Piano Co.
Phila, Pa.
rich@cunninghampiano.com
Check out the Science Channel's "How Its Made" featuring our piano restoration:
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#618922 - 07/30/01 11:27 AM Re: A440 Tone Generator
tdmac Offline
Full Member

Registered: 06/05/01
Posts: 20
Loc: SF Bay Area
The problem with tuning forks is that they are affected by temperature so they could be off. The tone generator available for the Palm works well and won't be affected by temperature.

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#618923 - 08/03/01 10:51 PM Re: A440 Tone Generator
Chris A. Offline
Full Member

Registered: 06/01/01
Posts: 33
Loc: Ohio
The reason I asked is that the two tuning forks I have are too quiet for my ears to use for detecting beats between F21 and the fork. I tried using the small electronic metronome I have, but it's too loud and the tone, while accurate, sounds "bad" (probably because it's just the fundamental frequency of 440 Hz without any harmonics?) It's likely not and I do hear the beat between it and F21, but I don't think it's an acceptable method for tuning A49 when taking the tuning exam. I have ordered the bigger, badder, steel fork from Schaff, in the hope I can hear it well enough to do the job. Can't tune the temperament without an accurate A49.

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#618924 - 08/04/01 07:25 AM Re: A440 Tone Generator
Ivars Galenieks Offline
Full Member

Registered: 08/03/01
Posts: 38
Loc: Latvia
Maybe little resonance box to massive tuning fork could help.

Ivars.

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#618925 - 08/18/01 07:51 AM Re: A440 Tone Generator
Bob Offline
4000 Post Club Member

Registered: 06/01/01
Posts: 4460
Loc: Florida
Chris, are you pressing the non-vibrating end of the forks against the bones around your ear - if not, do this, it will amplify the toneby transferring vibrations directly to your ear.
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