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From: marc~anukau.ac.nz
Date: Tue, 11 Jun 1996 10:32:23 +0000
Subject: Re: coverplate tone difference

> In a message dated 96-05-29 23:15:05 EDT, jfrazer writes:
>
> > It could be because they are thicker and don't have the
> >ring of tin or chrome or it could be because there is less room between the
> >reeds and the inside of the covers.
>
> Less room inside...possibly , material...no.
>
> Vern

As much as I hate to leap into a quagmire of technical postings with
my feet clad only in the Jandals that are my knowledge in this area I
do have some observations to add.

When I U-block, a technique I have been practising lately, I feel
the covers vibrate. This happens far more than when I pucker. I play
LOs exclusively. Anyway the tone when I U-Block is amazing to me and
certainly better than my pucker tone. I assume that the
vibration of the coverplates is a factor of the tone improvement.
With this in mind surely the nature of the shape and the material
used in the coverplates affects the way they vibrate in response to
the reeds vibration at the time. Another assumption I will make,
(thats two ;-) ) is that the nature of the vibration of the cover
plates may affect the nature of the vibration of the reeds, since
both these components are attached to effectively the same,
relatively solid object, the comb/reedplate unit. Any "flapping" of
the covers would also affect the shape and size of the chamber
between the reed plates and the cover plates however minutely. If
this is the case the material used in the cover plates ie:- the
thickness, the material, and the shape of the coverplates will all
have some affect on the nature of this vibration. The harps ability
to transmit these vibrations to the reed would also affect how much
these factors alter the tone.

How many variables is that......

What do you think "Wader-wearers." :-)

Yours in over my waist and sloshing around happily in my jandals,

Marcus Little