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<DIV><FONT face=Arial size=2>With Tunelab a false beat will show up =
on the
spectrum display as another distinct peak (pitch) which will move in =
parallel
w/the authentic one as the tension is changed. Extreme false beats =
can
cause a lot of "noise" on the display, but the combination of phase =
&
spectrum display with the new features which help you zero in on the =
pitch make
it pretty precise. As with any ETD, aural tuning skills are =
essential for
efficient use. Aurally, the false beat will remain at a constant =
speed,
while the beat from the true pitch will vary in speed as the string is =
tuned --
that's how you determine which one is correct. If I encounter a =
string
with a strong false beat, I will often move the mute to find a cleaner =
string in
the unison, set the pitch & then tune aurally to that. (I =
nearly
always tune my unisons aurally) If necessary, I will tune all =
three
strings with TL & then check the unison & octave aurally, =
bearing in
mind the sound of the false beat(s) of the individual string(s). =
If noise
in the unison matches the noise in the false string & the octave is
acceptable, I know I've done the best I can with that unison & move
on.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What I find interesting with any ETD =
that I've
tried, is that checking individual strings of a clean, =
at-pitch unison with
the ETD will give a clean reading at the proper
pitch. However, checking the open unison, the ETD will =
sometimes
indicate that it is slightly sharp or flat. Has anyone else =
observed
this? This again points out the need for good aural skills --- but =
I sure
like the TLPocket!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>By the way, one of the nicest features =
of TL is the
spectrum display which allows easy, un-muted pitch-raising. Robert =
has
just come out with an up-grade as well, which expands the capabilities
considerably & makes some functions significantly easier to =
use.
Powerful pocket product!</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Otto</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>
<A title=atodd@uh.edu href="mailto:atodd@uh.edu">Avery Todd</A> =
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=caut@ptg.org
href="mailto:caut@ptg.org">College and University Technicians</A> =
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, March 03, 2005 =
7:59
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> ETD Jumpiness (was Re: =
[CAUT]
Sacrifice (was tuners- technology))</DIV>
<DIV><FONT face=Arial size=2></FONT><BR></DIV><FONT =
face=Verdana>List,
<BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite"> =
Really
“never?” There can certainly be problems interpreting the =
SAT’s display, and
when a string produces a “jumpy” display, yes, it can be a =
problem tuning a
really clean unison using the display alone. According to Jim =
Coleman, the
“jumpiness” is generally a result of a feature of SAT: the =
ability to hear
and display two pitches of a “falsely beating” string =
simultaneously.
<BR> I find that the RCT (which I currently use) =
seems not
to have this problem, at least to the same degree. Sometimes I do =
need to
move the mike closer, but the display isn’t usually ambiguous. At =
any rate,
I find that it is easier to interpret, using all three visual =
feedback
elements (spin, growing, blushing). </FONT></BLOCKQUOTE><BR><FONT
face=Verdana>With some snips for brevity, along this line I'm =
curious to know
if the VT & Tunelab have any of this <BR>"jumpiness" problem. I =
know my
SAT III does! <BR><BR>Avery <BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite">Regards,<BR>Fred
Sturm<BR>University of New =
Mexico</FONT></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>