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Natural Science Forum / Physics / Acoustics / May 2006guitar properties
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 :-) > 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 :-) Do a Google search for: chladni patterns guitar Or try the Journal of Guitar Acoustics www.ukuleles.com/Technology/JGA.html Chris W  SignatureThe voice of ignorance speaks loud and long, But the words of the wise are quiet and few. --- Branazzo, > 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 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 >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 :-) <cut> > 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 :) ) 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 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 > Mike, > [quoted text clipped - 9 lines] > > --Ethan Mike, > using common sense rather than very sophisticated equipment < That's important too! > 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 > 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 http://mikedanielson.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 :-) > http://mikedanielson.com/ > [quoted text clipped - 3 lines] >> >> 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. www.mikedanielson.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 :-) >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 :-) |
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