Klarinet Archive - Posting 000785.txt from 2000/05

From: Keith <100012.1302@-----.com>
Subj: [kl] Eb on bell
Date: Wed, 17 May 2000 01:38:46 -0400

>From: George Kidder <gkidder@-----.org>
Subject: Re: [kl] Eb on bell

>The utility of resonance fingerings, which are always changes in the
pattern of open and closed holes BELOW the hole that is the primary vent
for a note, says to me that the lower part of the clarinet does in fact
influence the sound. Some of these fingerings (e.g., closing the lowest =
Eb
key as part of a resonance fingering for "open" G) are at great distances=

from the primary vent. So a question for Dan - in your experience, do th=
e
upper ("left hand") notes sound or feel any different when played on a
standard clarinet then they do with a basset lower joint?
<

This is true, and so was Dan's original comment. His is correct for a
'plain' =

fingering in which there is a length of pipe closed by the fingers then a=
ll
open holes. It isn't correct for forked fingerings, where there is a pipe=
,
a partially
open pipe, a section of closed pipe, then open pipe again. The resonance =

fingerings (not a very good term, really) or fingerings like L123R2 for F=
#
clarinet
register are ALL forked, and the acoustic analysis is then much more
complicated.
As George points out, the results can be counter-intuitive. What these
fingerings
must be doing is damping the "nasty" partials and resonating on the "nice=
"
partials (the dark partials, of course!). So the analysis and effect will=

be strongly
frequency-dependent. =

The question to Dan is still interesting!

Keith Bowen

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