Klarinet Archive - Posting 000191.txt from 2004/09

From: =?iso-8859-1?Q?ferengiz=E2de_dani=EAl_shawqy?= <rab@-----.de>
Subj: Re: [kl] Cracking a glass vase with high notes?
Date: Sun, 12 Sep 2004 06:00:30 -0400

I understand the issue is not so much the amplitude but the frequency of
sound; if it matches the resonance of an object that vibrates easily, the
idea would be to make it vibrate sympathetically so heavily that it breaks
itself. Still I doubt that would be possible with a water filled glass vase
by playing the clarinet in an adjacent room. I have never broken anything
nor have I ever heard of any clarinetist breaking things by playing; maybe
it works with boehm instruments only. Or the mouthpiece does have a too
short and open facing and consequently produces particularily ugly high
notes...
Greetings,
danyel

----- Original Message -----
From: Tim Roberts
To: klarinet@-----.org
Sent: Friday, September 10, 2004 10:45 PM
Subject: Re: [kl] Cracking a glass vase with high notes?

On Fri, 10 Sep 2004 10:18:24 -0700, Oliver Seely <oseely@-----.edu> wrote:

>Using Google with the two compound keywords "broken glass" and "high note"
>one gets 394 hits. The first, from the University of Salford (UK), offers
>a video showing the process in action. I haven't looked at the other 393
>hits! 8-)
>
>

However, I seriously doubt that an unamplified clarinet player could get
anywhere near 140 dBa, as was required in this experiment. Even a
high-school trumpeter would have a hard time with that.

I would guess it more likely that temperature fluctuations and physical
vibrations from the phone aggravated a manufacturing flaw in the vase.

--
- Tim Roberts, timr@-----.com
Providenza & Boekelheide, Inc.

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