4th tests

[Marcel Carey]

Giovanni,

Correction:

When testing A3-D4, listen to F3-A3 and F3-D4. It's major third, not
minor third.

Marcel Carey, RPT
Sherbrooke, QC

> -----Message d'origine-----
> De : pianotech-bounces@ptg.org 
> [mailto:pianotech-bounces@ptg.org] De la part de Giovanni Voltaggio
> Envoyé : 29 septembre 2005 21:29
> À : tune4u@earthlink.net; Pianotech
> Objet : Re: 4th tests
> 
> 
> Thanks!  Seems like this test is another good one:  play the lower  
> note of the 4th and a minor 3rd below it, compare that to the major  
> 6th comprised of the upper note of the 4th and the test note.  The  
> beat rates should be the same.  Example:  to test the A3-D4 interval  
> play A3 with F#3, then F#3 with D4, the beats should be the same.
> 
> Guess I shouldn't be testing my 4ths anyway, not without giving them  
> time to study.
> 
> Giovanni
> 
> 
> On Sep 29, 2005, at 4:35 PM, Alan Barnard wrote:
> 
> > Play the lower note with the major third below it, compare 
> to the 6th 
> > between the upper note of the 4th and the test note. The 
> sixth MUST be 
> > faster or you are on the wrong side, i.e., you're 4th is narrow
> > instead of
> > wide. Example: Test the A3-D4 4th with F3, the F3-D4 6th must beat  
> > faster
> > than the F3-A3 third.
> >
> > If the beat of the fourth is hard to sort out from false 
> beat in the 
> > string, try playing the fourth more softly, while listening hard.
> > Or, in
> > the tenor and bass, you can play the ghost tone by holding 
> down the  
> > fourth
> > and striking, then releasing, the note two octaves above the lower  
> > note of
> > the fourth, e.g., ghost the D3-G3 fourth by holding it down and  
> > wanging
> > (and releasing) D5.
> >
> > The only other tests I know of are comparing it's beat rate with
> > other 4ths
> > you've tuned (once you're sure the interval is properly on 
> the wide  
> > side of
> > pure) and comparing your fourth to it's companion 5th in a good,  
> > clean,
> > pure to slightly wide octave. The fourth must beat faster than the  
> > fifth,
> > usually about 1 bps or slightly faster if you are brave and 
> like purer
> > fifths, e.g., in the D3-D4 octave, the D3-G3 4th is appreciably  
> > faster than
> > the G3-D4 5th.
> >
> > Alan Barnard
> > Salem, Missouri
> >
> >
> >
> >> [Original Message]
> >> From: Giovanni Voltaggio <a440ps@sbcglobal.net>
> >> To: Pianotech <pianotech@ptg.org>
> >> Date: 09/29/2005 2:58:04 PM
> >> Subject: 4th tests
> >>
> >> Hi List -
> >>
> >> I was trying to remember the tests for P4ths but I can't recall 
> >> those.  On a piano with nice clean beats setting a P4th 
> isn't much of 
> >> a problem, but test intervals can sometime make the process easier.
> >>
> >> Giovanni V.
> >> _______________________________________________
> >> pianotech list info: https://www.moypiano.com/resources/#archives
> >>
> >
> >
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> 
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