More CC vs RC questions was RE: Killer Octave & Pitch Raise

[David Ilvedson]

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Sorry for my ignorance but what is the "fish"?

David Ilvedson






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Received: Thu, 17 Feb 2005 22:09:52 EST
Subject: Re: More CC vs RC questions was RE: Killer Octave &=
 Pitch Raise


In a message dated 2/16/2005 12:19:41 A.M. Pacific Standard Time,=
 davidlovepianos@comcast.net writes:
effect of softer hammer, softer panel, might produce a tone that=
 while
having adequate power (loudness) might not have the balance of=
 partials
to make the tone interesting, lively, expressive, you choose=
 your
favorite word.  So control of the panel's EMC, while seemingly=
 not as
critical for purposes of achieving stiffness in the assembly=
 overall,
might still be very critical in order to achieve a certain tonal
balance.
   David
  I think this is possible & is my thinking. When panel=
 compression  exsists some dynamic tension between the rib being=
 bent up a bit by the panel compression & the rib wanting to pull=
 it back down creates continual static & dynamic reactive force.=
 Perhaps some of this is healthy & building boards  attempring to=
 shape & mold certain characterisitcs is very interesting.
 I've been logging all the data per given board to keep track of=
 the design parameters & then draw a conclusion based on the=
 sound I get. Ie original rib width,height,length. New rib crown=
 width ,new length, Panel thickness , tapering ,where & how much.=
 Rib tapering etc.
 I installed the Mason board with cut-off, fish and altered rib=
 heights & widths, weds. & when the clamp came off in the morning=
 & it already had a very healthy & vibrant boom/rap even though=
 the tight bond surely isn't thoroughly cured. This is not=
 usually the case. 
  Dale
 


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