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<p class=MsoNormal><span style='color:#1F497D'>I agree with whoever said the
differences are from the midi software/hardware in each computer. I heard
quite even progressions but the tonal changes (inevitable over that wide a
frequency range) did have some subtle “steps”. I think for this to be a
valuable diagnostic, the hardware, software and particularly the firmware of
the midi would have to be very good and consistent.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>dp<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>David M. Porritt, RPT<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="dporritt@smu.edu"><span style='color:blue'>dporritt@smu.edu</span></a><o:p></o:p></span></p>
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<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] <b>On Behalf Of </b>Diane
Hofstetter<br>
<b>Sent:</b> Wednesday, October 24, 2007 8:07 PM<br>
<b>To:</b> pianotech@ptg.org<br>
<b>Subject:</b> Strange Hearing Test?<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>On
a hard of hearing chat list that I am subscribed to, someone today recommended
that non-audiologists can get an idea of where they have cochlear dead
zones by playing the "keys" on this software: <a
href="http://www.music.vt.edu/musicdictionary/appendix/pitch/pitch.html">http://www.music.vt.edu/musicdictionary/appendix/pitch/pitch.html</a> and
listening for: 1. how long the sound sustains, 2. whether the pitch seems to
rise when you go up the keyboard and 3. whether the sound is "clunky".<br>
<br>
It seems to me to be a flawed test because the tones are not uniform to begin
with--unless I have cochlear dead zones! <br>
<br>
To my hearing the tones are 4 seconds in length (the chatlister said 2
seconds--I think that proves my slow computer, not my good hearing), most
of the tones have beats of various speeds, and the harmonic content is not
consistent. Just some examples of the latter include: B3 vs C4; G
vs G#4; B5 vs. C6 and C#7 vs D7. (The octave numbers are the ones we are
used to using as pianotechs, not those given in the program.)<br>
<br>
Now, can anyone tell me whether the examples I gave are the same as each
other and I have cochlear dead zones? And what would you advise these
hard of hearing folk about the usefulness of this program for testing hearing?<br>
<br>
Thanks!<br>
Diane<br>
<br>
Diane Hofstetter<o:p></o:p></span></p>
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