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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>This might be caused by where you’re
injecting your audio into the TX radio. Whats the model/make of the TX radio
you’re using?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Eric Guth
[mailto:eric@efratnetworks.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, May 08, 2012 10:13
PM<br>
<b><span style='font-weight:bold'>To:</span></b> Ken<br>
<b><span style='font-weight:bold'>Cc:</span></b> app_rpt-users@ohnosec.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [App_rpt-users] Noise
reduction on receive audio from Allstar</span></font><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>I
am referring to audio coming from the link and transmitted to me on my
node. <br>
<br>
73,<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Eric.
4Z5UG<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=2 face=Calibri><span
style='font-size:11.0pt'><br>
On May 9, 2012, at 3:21 AM, "Ken" <<a href="mailto:ke2n@cs.com">ke2n@cs.com</a>>
wrote:<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>Is it possible you are getting
discriminator audio from your radio, but telling asterisk that it is “flat”
audio?<u5:p></u5:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>That would make everything high pitched
and noisy<u5:p></u5:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'>Ken<u5:p></u5:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;color:#1F497D'><u5:p> </u5:p></span></font><o:p></o:p></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> <a
href="mailto:app_rpt-users-bounces@ohnosec.org">app_rpt-users-bounces@ohnosec.org</a>
[mailto:app_rpt-users-bounces@ohnosec.org] <b><span style='font-weight:bold'>On
Behalf Of </span></b>Eric Guth<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, May 08, 2012 5:34
PM<br>
<b><span style='font-weight:bold'>To:</span></b> <a
href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a><br>
<b><span style='font-weight:bold'>Subject:</span></b> [App_rpt-users] Noise
reduction on receive audio from Allstar<u5:p></u5:p></span></font><o:p></o:p></p>
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<p class=MsoNormal><u5:p><font size=2 face=Calibri><span style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Folks,
<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 face=Calibri><span style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>I
notice that when hams are noisy into their Allstar node or the repeater
connected to the Allstar node, the noise on their signal seems to be higher
pitch and accentuated. Some folks are always noisy and therefore
difficult to copy. Does anyone else have this problem, and has anyone
reduced the noise with either software running on the server or some hardware
inserted in between the audio from the URI or CM108 dongle to the transmitter? I
was thinking a DSP audio filter (more expensive than my whole node). <o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 face=Calibri><span style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>73,
<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Eric
4Z5UG<o:p></o:p></span></font><u5:p></u5:p></p>
<p class=MsoNormal><u5:p><font size=2 face=Calibri><span style='font-size:11.0pt'> <o:p></o:p></span></font></u5:p></p>
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