Paul's postings

It is interesting that in a recent posting, Paul Erlich seems to admit th=
e
role of conditioning in interval preference. I think that this and a
broader contextual base are necessary elements in a useful theory. (By a
''broader contextual base'', I mean to include alternative musical contex=
ts
and in particular those that allow for longer listening periods. Clearly,=
a
classical _Presto_ is going to allow for shorter sampling periods than a
music with a 24-hour drone. In the latter case, a difference of a fractio=
n
of a cent may become vivid.)

Regarding the spectra of real string instruments: I tried a small
experiment with my Javanese rebab, an e-bow, a band-pass filter and a
frequency counter. Driving each brass string with the e-bow so as to redu=
ce
deviations caused by bowing, I then isolated individual partials, and
measured so as to compare with integer multiple frequencies. I found
deviations as follows: octave: +4cents, -5 cents; twelfth: +5cents, +4
cents, double octave: -3cents, +8cents.

I suspect that what is going on is the following: the wire would like to
vibrate in exact integer multiples, but the composition of the wire is
uneven enough that the nodal points are shifted a bit and the actual
frequency of the partial heard reflects the actual length of the part of
the string closest to the bridge. =


I suspect that the deviation in gut strings would be larger due to greate=
r
inconsistancies in the materials, but that using a real bow will tend to
obviate these deviations, in a chorus-like effect.

Incidentally, Paul's earlier claim that flageolet tones would be sharp du=
e
to stretching the string cannot be born out. In a recording session this
year at Hessischer Rundfuk, we had great problems with the flageolets on
the cellist's G string. They sounded all wrong, so I asked the Tonmeister=

to measure them. Some were sharp, but most were too low! The cellist put =
on
a new string and everything improved to an acceptable level. I thought th=
at
the string removed must have been very old. I later asked the cellist and=

he said that, no, in fact it had been put on only the day before.


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Subject: Dream House
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Haverstick here...Microstock 3 happened...unfortunately, so did the
worst snowstorm in 15 years; the whole state of Colorado was shut down,
but we played anyway, and 3 people did come. I did enjoy hearing John
Schneider again, and the Hstick band played a pretty good set, alltold.
However, the week preceeding MS 3 was very successful...I went on 3 local
radio shows to promote it, including one very well known AM talk radio
show, and we got a critic's choice plug in the Rocky Mt. News. Also, John
did a master class at Denver University, and John Starrett and Richard
Krantz did a math/tuning class at Metro State that was very well
attended. All told, there was a good buzz about the event, and we would
have had a good turnout. I am already planning next year's show.
I had Schneider stay with us for a couple of days, and he is a
marvelous musician...very open minded, good sense of humor, and a very
original concept of what he wants to do. I learned a lot from chatting
with him. His background in classical guitar is very broad...we all made
the best of a sorry situation. So, next time...Hstick


SMTPOriginator: tuning@eartha.mills.edu
From: Daniel Wolf
Subject: Paul's postings
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