Klarinet Archive - Posting 000406.txt from 1999/10

From: Shouryu Nohe <jnohe@-----.edu>
Subj: Re: [kl] clarinet crack woes
Date: Thu, 14 Oct 1999 12:05:41 -0400

On Thu, 14 Oct 1999, John J. O'Neill wrote:

> which they did. From that time on, I have wondered if upper and lower
> joints are made from the same piece of wood. I suppose different pieces of
> wood with different ages can be matched, if the ages are not too far
> apart. Maybe someone on the list can clear up my confusion. Anyhow, Jill,
> you may have to make the same decision that I had to make.

Yes - typically, the top joints, and sometimes the bell are carved from a
solid billet, and the pieces are holed and keyed so that they conform as
they did when they were a single billet. However, I don't know what
happens when they replace a joint. Perhaps they retain the one good joint
from a clarinet with a defective joint and use those for cases such as
yours.

In my case, I don't have to worry because I play a particle board
clarinet. ^_^

J. Shouryu Nohe
http://web.nmsu.edu/~jnohe
Professor of SCSM102, New Mexico State Univ.
"If I wanted a 'job,' I'd have gone music ED, thank you very much!"

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From donax-m-return-66-archive@-----.com Thu Oct 14 15:02:27 1999
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Date: 14 Oct 1999 15:01:25 -0000
Message-ID: <19991014150125.19835.qmail@-----.org>
From: charette@-----.org
Subject: [donax-m] Resonant frequency and speed of sound.

Victor,

The formula for frequency for an air column's 1st resonance is:
O = 4L

the formulae for the speed of sound in air:
V=fO

Correcting for diameter of air column:
O@-----.

Substituting and solving for f:
f@-----.4D)

Which shows the frequency/speed of sound correlation.

An experiment I've done (kid's, don't try this at home) is to take a lungful of helium and play the clarinet. Interesting results, due to the drastic difference in v between air and helium.

Mark C.

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