Trichords tuning

[Roger Jolly]

Hi Don,
            Thank's for the correction, it was late and I'm starting to
become dyslexic.
I used the first Soprano section F5 to F6, bass is left, rct in fine tune
mode. The test was done to try to find all the variables to improve
reproducibility in the PAZ figures that I have been getting.
At this level there is slight changes in pitch dependent on action
position, and also weather the string is excited with the hammer, or plucked.
The more I explore, the more questions seem to pop up.The only conclusion
that I am sure of thus far is that, hammer elasticity and strike point has
a big effect on pitch. ( the stretch). I am beginning to wonder if our ears
are playing tricks on us, for instance, if we don't hear the second
partial, do we subconsciously revert and tune to the fundamental because
that is where the sweet spot lies?????
Trying to find ways to improve PAZ as a tool, makes me realize how little I
know about the whole system. The more one discovers, the more one realizes
how little we know. There is a lot of theories but few acid test.
Anally obsessive.
Roger



At 01:39 AM 23/11/98 -0600, you wrote:
>Hi Roger,
>
>Which Octave? What tuning style (OTS? Which way is right? (bass or treble)
>Did you tune the bass string then middle then treble? or M B T or T M B?
>Did you use the listener ear or just watch the spinner? What partials was
>RCT listening to?
>
>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.
>
>At 12:58 AM 11/23/98 -0600, you wrote:
>> Greetings Issac,
>>                        &  was with in 1.5c of pitch through out after 3
>>tunings. The partial spectrum was within15% on each string of the unison,
>>checked by PAZ.
>>  Objective to tune 12 notes to obtain stable full bloom on every string (
>>0.02c). Tune the first 6 note working left to right, the second 6 notes
>>working right to left.
>>  The first string was tuned purely to RCT, the second and third aurally,
>>on average I ended up about 0.4c sharp per string, I corrected each string
>>for full bloom, Playing the three strings together the indication showed a
>>full cent sharp. but the unison sounded very tight.
>
>Regards,
>Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T.
>"Tuner for the Centre of the Arts"
>drose@dlcwest.com
>http://www.dlcwest.com/~drose/
>3004 Grant Rd.
>REGINA, SK
>S4S 5G7
>306-352-3620 or 1-888-29t-uner
> 
Roger Jolly
Baldwin Yamaha Piano Centre
Saskatoon and Regina
Saskatchewan, Canada.
306-665-0213
Fax 652-0505