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Klarinet Archive - Posting 000467.txt from 1999/06

Subj: Re: [kl] Clarinet Bore changing with use - hence BLOW OUT
Date: Tue, 15 Jun 1999 11:48:13 -0400

In a message dated 5/2/99 4:44:06 PM Eastern Daylight Time,

<< Alvin, what are you thoughts (since you have the tools to measure) about
Clarinet Blowout?

Yes clarinets do Blow Out, but many time players will descard a perfectly
good instrument because of tone hole variations and not bore varitions.
There are many thoughts on clarinet Blow Out. Some players will tell you
that a clarinet is Blown out when the pitch drops on the clarion regester,
Some will tell you that the horn is blown out when the timbre bbecomes
lighter and some will tell you that the clarinerts blown ouut when the horrn
startts to play out o tune from one regester to another. According to the
Great Acoustician, Blow out only occurs when a physical dementional change
has taken place in the bore of the instrumnet. These bore changes are more
noticalble on the smaller bore instruments such as the oboe and English horn
than on the clarinet and bassoon. The expantion or contraction amount is in
direct proportion to the overall volume of the bore. In other word the
smaller bore (oboe) is drastically affected by say a .05mm change whereas on
the larger clarinet bore , such a small varition might not even be noticed by
the player.

How many years playing does it typically take a full time
player for the the Bore to change on a Clarinet hence it being "blown out"
(dimensions changed enough to affect feel, and sound)?

David Blumberg >>

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