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Forum index » Science and Technology » Physics » Acoustics
guitar properties
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Branazzo
science forum beginner


Joined: 03 Mar 2006
Posts: 3

PostPosted: Wed May 03, 2006 11:38 pm    Post subject: guitar properties Reply with quote

i would be grateful if someone would point out some good
online resources for guitar acoustic properties.
(any research,theory or experiments would do)

have a nice day Smile
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Chris Whealy
science forum addict


Joined: 05 May 2005
Posts: 54

PostPosted: Thu May 04, 2006 8:06 am    Post subject: Re: guitar properties Reply with quote

Branazzo wrote:
Quote:
i would be grateful if someone would point out some good
online resources for guitar acoustic properties.
(any research,theory or experiments would do)

have a nice day Smile

Do a Google search for: chladni patterns guitar

Or try the Journal of Guitar Acoustics www.ukuleles.com/Technology/JGA.html

Chris W

--
The voice of ignorance speaks loud and long,
But the words of the wise are quiet and few.
---
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Ethan Winer
science forum beginner


Joined: 08 Jun 2005
Posts: 37

PostPosted: Thu May 04, 2006 3:18 pm    Post subject: Re: guitar properties Reply with quote

Branazzo,

Quote:
i would be grateful if someone would point out some good
online resources for guitar acoustic properties.
(any research,theory or experiments would do)

I think this is exactly what you're looking for:

www.kettering.edu/~drussell/guitars/hummingbird.html

--Ethan
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Mike Danielson
science forum beginner


Joined: 12 Jan 2006
Posts: 6

PostPosted: Sat May 06, 2006 8:43 pm    Post subject: Re: guitar properties Reply with quote

I will toot my own horn here. I have made a big study of this as applied to
classical guitars, and I have some ideas. The bad side is that no one is
very interested in acoustic science applied to instruments.

http://mikedanielson.com/

Mike Danielson

"Branazzo" <branasREmoVe@mail.inet.hr> wrote in message
news:mcfi52lncbdk3akrd9gk44t65ks0llbn5u@4ax.com...
Quote:
i would be grateful if someone would point out some good
online resources for guitar acoustic properties.
(any research,theory or experiments would do)

have a nice day Smile
Back to top
Mike Danielson
science forum beginner


Joined: 12 Jan 2006
Posts: 6

PostPosted: Sat May 06, 2006 8:46 pm    Post subject: Re: guitar properties Reply with quote

http://mikedanielson.com/


"Branazzo" <branasREmoVe@mail.inet.hr> wrote in message
news:mcfi52lncbdk3akrd9gk44t65ks0llbn5u@4ax.com...
Quote:
i would be grateful if someone would point out some good
online resources for guitar acoustic properties.
(any research,theory or experiments would do)

have a nice day Smile
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Mike Danielson
science forum beginner


Joined: 12 Jan 2006
Posts: 6

PostPosted: Sat May 06, 2006 9:12 pm    Post subject: Re: guitar properties Reply with quote

www.mikedanielson.com


"Branazzo" <branasREmoVe@mail.inet.hr> wrote in message
news:mcfi52lncbdk3akrd9gk44t65ks0llbn5u@4ax.com...
Quote:
i would be grateful if someone would point out some good
online resources for guitar acoustic properties.
(any research,theory or experiments would do)

have a nice day Smile
Back to top
Mike Danielson
science forum beginner


Joined: 12 Jan 2006
Posts: 6

PostPosted: Sat May 06, 2006 9:15 pm    Post subject: sorry for extra posts--server says they never went through Reply with quote

"Branazzo" <branasREmoVe@mail.inet.hr> wrote in message
news:mcfi52lncbdk3akrd9gk44t65ks0llbn5u@4ax.com...
Quote:
i would be grateful if someone would point out some good
online resources for guitar acoustic properties.
(any research,theory or experiments would do)

have a nice day Smile
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Neky Lyk
science forum beginner


Joined: 25 Mar 2006
Posts: 15

PostPosted: Sun May 07, 2006 9:17 am    Post subject: Re: guitar properties Reply with quote

"Mike Danielson" <m.j.danielson@charter.net> wrote in message
news:cf87g.65$ue6.4@fe05.lga...

<cut>

Quote:
The bad side is that no one is
very interested in acoustic science applied to instruments.

<cut>

it's because there's 2 much work 4 the money you can earn by doing it.
people always look for the lowest work2money ratio(WMR Smile )
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Ethan Winer
science forum beginner


Joined: 08 Jun 2005
Posts: 37

PostPosted: Sun May 07, 2006 3:13 pm    Post subject: Re: guitar properties Reply with quote

Mike,

Quote:
no one is very interested in acoustic science applied to instruments.

I am VERY interested in this! :->)

I went to your site and enjoyed what I saw. Are you familiar with the work
of Carleen Hutchins? Carleen is one of my heroes, and she's known for her
pioneering work taking apart Stradivarius violins and analyzing the front
and back plates on a shaker table. My cello was analyzed that way and
optimized (regraduated) by one of her students under her supervision.

--Ethan
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Mike Danielson
science forum beginner


Joined: 12 Jan 2006
Posts: 6

PostPosted: Sun May 07, 2006 8:25 pm    Post subject: Re: guitar properties Reply with quote

Ethan, I have done 100s of experiments with classical guitars, often
exploring very simple things using common sense rather than very
sophisticated equipment ( I do have a PhD in materials science). For
instance, does the air pressure leakage between dipoles (out of phase) on
the top have an important effect on volume (answer--not very much in spite
of what the literature says).

I have been a member of the Catgut Acoustical society for many years (over
30) and am aware of the acoustical literature for classical guitars,
violins, and cellos. I have carried out similar studies on the violin (as I
did on classical guitars) and now build violins/cellos in such a way that I
play them first and then remove the top one or more times to make the final
acoustical adjustments. I use a glue stick to put the top on very
temporary. I created a cradle for the violin the allows electromagnetic
stimulation of the bridge rather than Dunnewald's method or Schleske's
method.

The problem with this is that though it satisfies me in a scientfic manner,
instrument evaluation is very subjective--building superior instruments in
an acoustic sense, does not necessarily result in sales. Until you are
discovered, you are a non-entity in this business and your instruments
languish. Let me more blunt--everyone builds guitars and violins--all you
have to do is read a book.

Thanks for you kind comments, Ethan

Mike Danielson

"Ethan Winer" <ethanw at ethanwiner dot com> wrote in message
news:MOCdndD7MPRQk8PZRVn-ug@giganews.com...
Quote:
Mike,

no one is very interested in acoustic science applied to instruments.

I am VERY interested in this! :->)

I went to your site and enjoyed what I saw. Are you familiar with the work
of Carleen Hutchins? Carleen is one of my heroes, and she's known for her
pioneering work taking apart Stradivarius violins and analyzing the front
and back plates on a shaker table. My cello was analyzed that way and
optimized (regraduated) by one of her students under her supervision.

--Ethan

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Ethan Winer
science forum beginner


Joined: 08 Jun 2005
Posts: 37

PostPosted: Mon May 08, 2006 1:55 pm    Post subject: Re: guitar properties Reply with quote

Mike,

Quote:
using common sense rather than very sophisticated equipment

That's important too!

Quote:
instrument evaluation is very subjective

Agreed, though anyone who is reasonably sophisticated can tell if an
instrument has "dead zones" that mute only certain notes, or a bad wolf
tone, and other common problems. But it's much more difficult when it comes
to matters of taste. As a rock/blues guitar playing cellist :->) when I hear
a really good cello it sounds sort of like a wah-wah pedal at different
static settings for each note. The many different high-Q resonances give a
nice character to every note, emphasizing various harmonics as different
notes are played.

--Ethan
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Angelo Campanella
science forum Guru Wannabe


Joined: 08 May 2005
Posts: 226

PostPosted: Tue May 09, 2006 1:52 am    Post subject: Re: guitar properties Reply with quote

Mike Danielson wrote:
Quote:
I will toot my own horn here. I have made a big study of this as applied to
classical guitars, and I have some ideas. The bad side is that no one is
very interested in acoustic science applied to instruments.

That should not stop you from improving guitars of any sort.
The best part of classical guitars, in my opinion is their "playabiliy".
That is, they can be used to render a wide variety of composed (and
uncomposed or "soul") music.

Angelo Campanella
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ri
science forum beginner


Joined: 04 May 2006
Posts: 5

PostPosted: Wed May 10, 2006 3:26 am    Post subject: Re: guitar properties Reply with quote

"Mike Danielson" <m.j.danielson@charter.net> wrote in message
news:cf87g.66$ue6.54@fe05.lga...
Quote:
http://mikedanielson.com/


"Branazzo" <branasREmoVe@mail.inet.hr> wrote in message
news:mcfi52lncbdk3akrd9gk44t65ks0llbn5u@4ax.com...
i would be grateful if someone would point out some good
online resources for guitar acoustic properties.
(any research,theory or experiments would do)

have a nice day :-)



Hey Mike... maybe I can do some marketing for you... we can start with the
Italian market and Malaysian. I've got some Ideas on guitars too, maybe we
can share info.
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Google

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