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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'>
asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Felix Dong<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, March 15, 2011 4:19
PM<br>
<b><span style='font-weight:bold'>To:</span></b> Asterisk Users Mailing List -
Non-Commercial Discussion<br>
<b><span style='font-weight:bold'>Subject:</span></b> [asterisk-users] signal
amplified by asterisk</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi there,<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>i called one asterisk server from another asterisk server. The calling
server played back a audio data und the answering server recorded the audio
sample using record() function.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I tried both ISDN, VoIP connections. Camparing with the original audio
data, the recorded samples from both connections were amplified by asterisk, so
that the recording were much louder. But I didn't adjust any rxgain or txgain.
I am wondering, how could it be!? Is this case normal? Can anyboby tell me, how
many dB will the transmitted and recieved signals be amplified by asterisk in
case of default rxgain and txgain (with another words: no setting these
values)?<br clear=all>
Thanks a lot.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>best regaud<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
Felix<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>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>My guess is that somehow the recorded file
is a GSM 6.10 (WAV) file instead of the Microsoft PCM 16 bit mono (wav) you are
expecting. File <foo> will verify this.<o:p></o:p></span></font></p>
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