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A Logical Explaination of Fractional Violin Ratios
Topic Rating: 5 Topic Rating: 5 Topic Rating: 5 Topic Rating: 5 Topic Rating: 5 Topic Rating: 5 (3 votes) 
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Irv
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June 15, 2021 - 9:44 am
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I have long wondered about the logarithmic proportion of fractional violins.  For instance, the ratio between a full sized violin and a half size is the sixth root of two.  Since the violin does not possess frets, a less demanding ratio would also work.

According to the provided link, it appears that the system was developed by Stradivari. He made both fractional guitar and violin.  For the guitar, he dropped off the distance of the first fret from the nut and proportioned the instrument accordingly.  As the fraction got exceedingly smaller, he chopped off additional frets.  He also made fractional violin and retained the same proportional system as required for the guitar.

Makes sense to me.

http://www.quadibloc.com/other.....us0803.htm

Success is the progressive realisation of a worthy ideal. —Earl Nightingale.

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Mark
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June 15, 2021 - 11:54 pm
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That was a bit more indepth than I had initially thought it would be, but it was interesting. 

 

Thanks Irv,

 

Mark

Master the Frog and you have mastered the bow.

Albert Sammons

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Gordon Shumway
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June 16, 2021 - 4:01 am
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?

Presumably a sixth root of 2 is designed to correspond with an ET tone?

Andrew

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stringy
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June 16, 2021 - 7:55 am
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42

Bit more, bit more, snap #*÷?×[email protected]?#[email protected]

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ELCBK
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June 16, 2021 - 8:29 am
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@Irv -

Super interesting article! 

Just a little confusing when the author dives down the rabbit hole of obscure units of measure. (lol) 

The Violas, with the larger/wider bottom half (Tertis pattern?), have caught my attention in the past - beautiful sound from what I've heard played.

I only saw a slight mention of Violoncello - any idea where the "Violoncello da Spalla" fits in here, a possible optimum size? 

No Chin Rest or Shoulder Rest needed for these! (lol)

From my Nordic thread: 

Mikael Marin (of the band "Väsen" - Sweden) plays some old (1700's - 1800's) tunes along with some of his original compositions.  I'm partial to Marin's originals "Old Man Waltz" and "Josefin" (2nd & last of his 4 tunes in "Part 02")! 

He plays them on a 5-string "Violoncello Da Spalla"! 

Part 01:

Mikael Marin Part 01

Part 02:

Mikael Marin Part 02

Info on Violoncello Da Spalla:

Violoncello Da Spalla vs Viola

60e3600607d7f8ac8739c49df99d7e32--nursery-decals-nursery-rhymes.jpg

 

- Emily

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Irv
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June 16, 2021 - 9:05 am
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@ELCBK and others.  I am also a fan of the Tertis viola and have an oriental clone of one.  In the original design, he insisted that the sound post be placed outboard of the bridge, which compromises the plates due to grain pattern.  A luthier glued patches of wood (frequently used as a sound post protrusion repair) as a work around, which infuriated Tetris.  

Success is the progressive realisation of a worthy ideal. —Earl Nightingale.

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AndrewH
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June 16, 2021 - 3:38 pm
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Not to hijack the thread further, but my viola is also a Tertis pattern. (However, the soundpost is in a more conventional location.)

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Irv
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June 16, 2021 - 5:07 pm
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@AndrewH and others.  Mine is as well.  And I am not in a hurry to change it.

Success is the progressive realisation of a worthy ideal. —Earl Nightingale.

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ELCBK
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June 18, 2021 - 9:02 am
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@Irv -

I used to think "Viol" was just another name for "Viola". (lol)

We don't ever talk about Viols here, but I've been listening to to some Baroque Viol music and happened upon a paper by John Catch, you might find relevant to this thread. 

Our Orthodox Viol Sizes:The Historical Evidence Re-Examined

I think they're pretty cool instruments. 

https://cdn.shopify.com/s/files/1/2225/8403/products/LUMBV7S_1200x2000.jpg?v=1521201241 

 

- Emily

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