Inharmonicity in strings

[Jim Coleman, Sr.]

Hi Richard:

I just got back from Providence today. I met Ron Nossaman, John Page, Bill
Bremmer. BTW, Bill won the tuneoff with his Equal Beating Victorian Well
tamperament against the Bailey Well and against Virgil's Smith's Equal Temp.
Bill is not such a bad guy. He can really tune (and aurally too). His piano
was a Walter Grand and Virgil's was a Steinway B.

Jim Coleman, Sr.


On Mon, 6 Jul 1998, Richard Moody wrote:

> Hi Jim 
> 	47 cents WOW  that is almost a quarter of a tone. Almost enough to make
> one want to refigure tensions.  
> I heard a piano on the radio the other night that sounded just great
> matching violins comming in on high notes, and a xylophone even.  That is
> why I really wish tuner, and at least the piano be mentioned in the
> liners. Who ever did that piano got the stretch right.  
> 	Well have a good time in Providence, and enjoy some good East Coast
> summer weather, as compared to the ovens of Pheonix.   : )
> 
> Richard Moody 
> 
> ----------
> > From: Jim Coleman, Sr. <pianotoo@imap2.asu.edu>
> > To: Richard Moody <remoody@easnet.net>
> > Subject: Re: Inharmonicity in strings
> > Date: Sunday, July 05, 1998 6:43 PM
> > 
> > Hi Richard:
> > 
> > Usually the C7 needs to be stretched about 12 to 17 cents just in order
> to
> > have a pure triple octave. C8 may require as much as 47 cents or more if
> you
> > want to have reasonably good quadruple octaves. In tests which I have
> made
> > with audiences of piano technicians, I have found that to satisfy the 
> > melodic sense of pitch compared the middle C, C7 has to be from 25 to 43
> 
> > cents sharp. There is no way we can accomodate that much sharpness
> without
> > the intervening octaves sounding too wild.
> > 
> > Jim Coleman, Sr.
> > 
> > On Sun, 5 Jul 1998, Richard Moody wrote:
> > 
> > > Hi Jim 
> > > 	Thanks for  your time and consideration. As usual you  have raised a
> > > great banquet of food for thought. Particularly about fifths (outside
> the
> > > temp) gettng stretched so far they go past pure to wide instread of
> > > narrow. Perhaps a new term could be used, "overstretching". 
> Stretching an
> > > octave usually implies  using"natural stretch" resulting from
> > > inharmonicity. I guess if the octaves were stretched beyond this
> fifths
> > > might have to be stretched so much they would end up on the sharp
> side. 
> > > At least then the fourths might not be so bad?.   I have rarely
> stretched
> > > an octave to where the beats are audible in tuning.  Well in the last
> two
> > > upper octaves, but only if it "complements" the rest of the piano.  
> > > 	Have a good time in Providence. Wish I were there.  The family is
> > > planning a reunion in Oct in SE Pa so it would be too hard to make two
> > > trips back in the same year. Hope there is an email facility there so
> > > techs could report back interesting stuff back to the list. 
> > > 	I have seen a couple of comments about the Coleman Pure 5th Temp. I
> did
> > > some tweeking with the spread sheet, and came out with an octave of
> > > 2.003875 That gives to three decimal places (-0.000). Interesting that
> C88
> > > reads 10.9 sharp, or +24 cps from theoretical (wo inharmonicity).  I
> > > wouldn't know how much the last note is stretched naturally by ear,
> but I
> > > wouldn't be surprised if it were 10 -12 cents. 
> > > 
> > > Richard Moody     
> > > 
> > > ----------
> > > > From: Jim Coleman, Sr. <pianotoo@imap2.asu.edu>
> > > > To: Richard Moody <remoody@easnet.net>
> > > > Subject: Re: Inharmonicity in strings
> > > > Date: Friday, July 03, 1998 12:29 PM
> > > > 
> > > > Hi Richard:
> > > > 
> > > > I didn't see any question marks in your last email, but I tho't I
> should
> > > 
> > > > at least acknowledge the post.
> > > > 
> > > > Leaving for Providence on Monday on the big bird.
> > > > 
> > > > Jim Sr.
> > > 
>