Klarinet Archive - Posting 000545.txt from 1997/11

From: Jrykorten@-----.com
Subj: Change in resistance by changing impedance
Date: Thu, 13 Nov 1997 22:04:21 -0500

I've think I understand the change in resistance in the right hand when using
play dough on the bell of my clarinet.

If the function of the bell is an impedance coupler. (Something that
increases the efficiency that the vibrations can eminate from the
instrument.) Then by dampening a surface we know is in motion (because, as
posted earlier, damping the outside of it changes the sound), we are changing
the way the same device acts as an impedance coupler.

So you are feeling the changes in efficiency that a free ringing bell has
over a bell that is dead to vibration.

Based on the differences in clarinet sound I have found when changing bells
between my three different clarinets, I would venture to guess that the next
big evolutionary change in clarinet sound (like the change in sound that has
accompanied the development of the current reverse taper, some fraised hole
design from a straight cylindrical one that was highly fraised) will come
from exploring bell technology over the next 100 years!

Jerrry Korten
NYC