longitudinal mode vibrations

[dporritt]

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Richard:

The inharmonicity files are indeed just in cents.  As one who has written a
program to read those files and create a tuning, I hope they don't change.

dave
_______________________________________________

David M. Porritt, RPT
Meadows School of the Arts
Southern Methodist University
Dallas, Texas
dporritt@swbell.net
_______________________________________________


-----Original Message-----
From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On Behalf Of
Richard Brekne
Sent: Monday, May 31, 1999 12:17 PM
To: pianotech@ptg.org
Subject: Re: longitudinal mode vibrations



dporritt wrote:

     Richard:Tunelab has a display of the frequency of each note on the main
screen display.  As you change partials, the frequency of that partial is
shown.dave
    yes it does.. but my understanding is that saveing partial data to
inharmonicity files which are ascii is in cents only. Am I wrong about this
??

    Richard Brekne



     _______________________________________________

    David M. Porritt, RPT
    Meadows School of the Arts
    Southern Methodist University
    Dallas, Texas
    dporritt@swbell.net
    _______________________________________________

    -----Original Message-----
    From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On Behalf
Of Richard Brekne
    Sent: Monday, May 31, 1999 7:23 AM
    To: pianotech@ptg.org
    Subject: Re: longitudinal mode vibrations

    "Paul S. Larudee" wrote:

        Ron Nossaman wrote:
        > I wonder how one would go about measuring longitudinal partials
anyway. Can
        > this be done with an ETD? If so, someone could set it up fairly
easily and
        > whack the bejeebers out of a string to get a first hand look at
what happens
        > to the pitch of the longitudinal. Where are our instrumented
experimenters
        > out there?
        >
        >  Ron

        I agree that experimental studies are the only way to go any
farther,
        but I have a feeling there aren't too many grants to be had for this
        sort of research - at least not with pianos as the main application.
        Hope I'm wrong.  Nice discussion, though.  Anyone else have any
ideas?

        Paul

    One thing we can all do is mail the three biggies Reyburn, Sanderson,
and Tom and ask them to include more features in these products use as
measuring devices. String partials should be able tobe measured in  cents
(in both the Sat III manner and in the manner Reyburn uses) and hz, (for
some purposes hz are handy) and the data should be able to be exported in
ascii format for use in spreadsheets / math graphics programs. Tune Lab is
the only one of the three so far to have this option and its only in cents.
(which admitedly has more uses then hz for our purposes, still the extra
option of having hz would be nice)
    Richard Brekne


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