Trichords tuning

[Roger Jolly]

Hi Newton,
                I was a little dyslexic when I posted that phrase, you are
quite correct the addition of the unison drops flat. Trying to formulate
consistent results is very difficult.
Some variables that has got me wondering, Bridge stiffness left to right
due to notching, treble string I think has a stiffer termination??? Centre
line of hammer is firmer that the edges, this was in evidence with a new
set of hammers, and how much voicing that was required to get all three
strings sounding the same. On average voicing a bright piano drops the
stretch 10c so what partial are we really listening to????  Is our ear
fooled sub consciously???? e.g. at A6 no second partial is sounding do we
revert back to the fundamental???? 
 Like you I have very little understanding of what is happening. Slowly
going nuts trying to find answers.
Regards Roger
P.S. Thank's for the correction.


At 04:28 PM 25/11/98 -0500, you wrote:
>"Interesting that your piano showed a *rise* in pitch. The ones I have
>checked (small pso's) showed a drop in pitch with all three strings
>sounding."
>
>I think this is because you can tune on string, say to an SAT, tune the
>next by ear, check with SAT and it is flat.  Tune to the SAT and compare
>unison and it is out.  I have yet to come to an understanding of this, I
>just know it is so.  Weird!
>
> If you tune the string that wants to be the lowest then the others that
>want to be sharp you should have a unison that is sharp instead of flat.
>
>                    Newton
> 
Roger Jolly
Baldwin Yamaha Piano Centre
Saskatoon and Regina
Saskatchewan, Canada.
306-665-0213
Fax 652-0505