Klarinet Archive - Posting 000496.txt from 2001/02

From: David Glenn <notestaff@-----.de>
Subj: Re: [kl] experiments on instruments
Date: Tue, 13 Feb 2001 18:23:34 -0500

Bill Hausmann wrote:

> At 11:40 PM 2/12/2001 +0100, David Glenn wrote:
>
> >My friend who did the resonance spectral tuning had some experiments done at
> >the Fraunhofer Institut here in Germany with violins. They constructed a
> >bowing device and analysed the tone with and with out the changes to the
> >outside of the body of the violin. The changes were temporarily caused by
> >applying mass to the violin and removing it again (whereby the exact points
> >of application are very significant). The differences in the amplitudes of
> >the different overtones were significant. I would have to ask for the
> >details. But this is a repeatable experiment. Unfortunately, as far as I
> >know, it hasn't been done with clarinets. I remember Tony P. telling of a
> >clarinet blowing machine but can't remember what experiments he told about in
> >this context.
>
> Of course, the difference here is that the body of the violin is SUPPOSED
> to resonate by design. In fact, it MUST or the sound will not project at
> all. Thus one would EXPECT significant changes in such an experiment. If
> done with a clarinet, I'm sure the results would be FAR less dramatic.
>
> Bill Hausmann bhausmann1@-----.com
> 451 Old Orchard Drive http://homepages.go.com/~zoot14/zoot14.html
> Essexville, MI 48732 ICQ UIN 4862265
>

++++++++++++++++++++++++++++++++++++++

That's right - but you might be surprised at the difference. I have barrels and
bells with and without these changes but otherwise as identical as possible. I
haven't taken them to the Fraunhofer Institut but I can change back and forth as
much as I want. Anybody is welcome to come and try it out. (I have Wurlitzer
Reform-Boehms). I could have a Buffet or Leblanc or whatever barrel done too.

David

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