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Post subject: Need Help- Fretted note not matching the open string...
Posted: Sun Jul 05, 2009 1:24 am
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I notice when I fret the fifth fret of a certain string and play the open string that matches it, the fretted note is always a little higher in pitch. For example, I fret an e note on the b string and I play open e note on the e string, I notice that the fretted note is a little higher in pitch than the open e note.

My question is whether not there is an adjustment that I could do to fix this problem. My strings are only 2 weeks old and they're GHS Boomers, also my bridge is set correctly and the intonation seems fine.

Any info to help me fix this problem would be greatly appreciated, I already did lead lubrication, basically I took a pencil and rubbed lead in the slots of the nut, and I also pulled on the strings and tried tuning it again and it still has the problem :(


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Posted: Sun Jul 05, 2009 3:44 am
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Its a common problem. In fact its on every regular guitar in existence, whether people notice it or not is down to them. The tempered intervals of the neck (fret positions) are a compromise. There are 7flats and 7 sharps to every semitone. Thats why some music is keyed at Cb oe E#. Basically tuning at the 5th fret to the open string is wrong and doesnt work. Neither do harmonic tunings. Its because the 5th interval of the board is set sharp. The 7th interval is set slightly flat.
My nuts work to alleviate this problem (plug :lol: ). There is no perfect solution though, unless you want 27 frets per octave.

This page may help you understand it more. You'll need a calculator and a good bit of free time.

http://www.lucytune.com/new_to_lt/pitch_01.html

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Posted: Sun Jul 05, 2009 3:56 am
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Here is another discussion of temperament.

http://www.edgeguitarservices.co.uk/Fei ... /index.htm

The bottom line is that you can't get it perfect.

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Posted: Sun Jul 05, 2009 5:20 am
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I remember seeing a certain guitar that Steve Vai has where the frets themselves are shaped in a special way to combat this problem...cant remember who made it for him though ....ARRRGH that is gonna bug me all day

**EDIT**

kk I found what I was talking about...here is a photo of the freaky offset frets:

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Posted: Sun Jul 05, 2009 7:33 am
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scarroll1 wrote:
I remember seeing a certain guitar that Steve Vai has where the frets themselves are shaped in a special way to combat this problem...cant remember who made it for him though ....ARRRGH that is gonna bug me all day



I think it's a swedish guy who makes the, I'll see what I can find out.

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Posted: Sun Jul 05, 2009 8:35 am
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Thanks for the info guys :D Those frets on the steve vai guitar look really weird and cool at the same time lol


Actually though, I've noticed that when I put new strings on my guitar, the pitching problem is not as prominent or is sometimes non-existent. But I don't want to replace my strings every two weeks...too much money :lol:


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Posted: Thu Aug 27, 2009 12:51 am
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The guy's name is Anders Thidell and the system is called "True Temperament".

The problem with it is that it proceeds from the assumption that the guitar's inability to achieve consonance in all chord forms is a technical deficiency which needs to be corrected. This is because most guitarists and guitar makers lack a sound musical education and therefore fail to understand that the problem is not with the guitar, but with the music. Our brains recognise as "correct" only intervals which have an exact integer ratio relationship with each other, e.g 1/2, 2/3,3/4 etc. The problem is that these intervals are irrational and don't allow the pitch value of individual notes to be fixed, a prerequisite for instruments such as guitar and piano.
The guitar faces unique problems because not only are the notes of fixed pitch, but the compass of each string overlaps its neighbour by approximately 3/4 of its range, so that the same note can appear at several points on the fingerboard. The issue is further confused by the fact that there are technical issues to do with the set up of a guitar that can affect the intonation accuracy; arc relief, nut height etc. and of all the practicing guitar techs in the world the ones who can correctly address these issues are in a minority...

I've gone into it in some depth on the Seymour Duncan forum here http://www.seymourduncan.com/forum/showthread.php?t=170612&page=3 so forgive me if I refer you there rather than go to the trouble of repeat posting here.

To come back to the OP's problem, I believe that the problem with your guitar is that the string height at the nut is too high and you have too much arc relief. This would cause you problems around the fifth position.


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