Coupled strings and pitch drop

[Jim Coleman, Sr.]

Hi Ed:

Yes, there is a difference between the coupling of two strings and the 
coupling of 3 strings. In my early studies, it does not seem to be linear
either, ie a greater difference between 2 and 3 strings in comparison to 
between just one or two strings.

Jim Coleman, Sr.

PS Thanks for sending the CD right out. I am still playing it. I 
expected to hear more difference in the Moonlight than I did. JWC

On Tue, 10 Feb 1998 A440A@aol.com wrote:

> Rich writes:
> << Each string
> in the coupled set vibrates as if it were slightly more massive, so a shift
> down in pitch. >>
> 
>      Yes, this is one factor. However, I believe there are others that have to
> be considered.  
>       In the Five Lectures Book, I believe it is Anders and Askenfeldt(Sp?) or
> maybe even Hall that describes the effect of increasing the flexibility, (and
> the movement that results),  of the terminus.  It is shown that the additional
> movement of the bridge will cause the string to "see" a point of termination
> that is behind the bridge pin, effectively sounding flatter than if the end
> point were  more rigid. 
>    <now he moves out on the well-scorched target, where it is easy to get a
> shot at him,  no time to mention temperament.........>
> 
>     Could the unison, when allowed to sound, be causing more bridge movement,
> thus causing the phenomenom of "longer than absolute length" come into play,
> showing up as lower pitch?   
>      Perhaps those that want to measure such things could find out if there is
> a degree of flattening when two strings are compared to one?  And is this
> greater or lesser than when the third string is allowed to sound.  
> 
> Regards, 
> Ed Foote
> ( this seems like the sort of project that could use the RCT's
> capabilities...??)
> 
>