<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt">I think the best way to solve this is by doing AGC first. This should make sure audio level is similar for all participants.<br><div><span><br></span></div><div><br></div> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Anthony Minessale <anthony.minessale@gmail.com><br> <b><span style="font-weight: bold;">To:</span></b> FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, January 16, 2013 6:23 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [Freeswitch-users] Mod_Conference Improvement
(Denoise)<br> </font> </div> <br>
<div id="yiv708759479"><div dir="ltr">There is also the preprocess app which uses a media bug in the core for a variety of things but is incomplete it's using a bit of code from speex so we can certainly improve that as well.<div><br></div><div>
</div></div><div class="yiv708759479gmail_extra"><br><br><div class="yiv708759479gmail_quote">On Tue, Jan 15, 2013 at 8:58 PM, Michael Jerris <span dir="ltr"><<a rel="nofollow" ymailto="mailto:mike@jerris.com" target="_blank" href="mailto:mike@jerris.com">mike@jerris.com</a>></span> wrote:<br>
<blockquote class="yiv708759479gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div style="word-wrap:break-word;">If you wanted to implement something like this you could do so as a media bug, it does not need to touch mod_conference in any way. Take a look at mod_ladspa for an example of a similar module that modifies audio using a media bug. Give it a try and see if you can get something working.<div>
<br></div><div>Mike<div class="yiv708759479im"><div><br><div><div>On Jan 15, 2013, at 8:03 PM, Michael Collins <<a rel="nofollow" ymailto="mailto:msc@freeswitch.org" target="_blank" href="mailto:msc@freeswitch.org">msc@freeswitch.org</a>> wrote:</div><br><blockquote type="cite">
While I don't have a problem with the concept of noise filtering I have to point out that each member of the conference can have his or her own noise level setting. From fs_cli:<br><br><span style="font-family:courier new, monospace;">conference <conf name> energy <member_id|all|last|non_moderator> [<newval>]<br>
</span><br>You only need to apply it to the person who is in the noisy location. In fact, in the example configuration the user can dial 9 to increase the energy threshold (for when he's in a noisy environment) or press 7 to decrease the threshold. Pressing 8 will reset the energy to normal, which I believe is 200.<br>
<br>-MC<br><br><div class="yiv708759479gmail_quote">On Tue, Jan 15, 2013 at 4:24 PM, Usama Zaidi <span dir="ltr"><<a rel="nofollow" ymailto="mailto:itsusama@gmail.com" target="_blank" href="mailto:itsusama@gmail.com">itsusama@gmail.com</a>></span> wrote:<br><blockquote class="yiv708759479gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex;">
Hi,<br><br>I talked about this a while back on the channel, the way how energy-level is implemented in mod_conference isn't the right way to handle noise in my opinion because the participants that get bridged would have a different noise floor depending on where they are located, so if I set the value of energy-level too high to accommodate one participant, any other participant in a quite sitting would never get bridged, I proposed we should tackle this the way Asterisk does using a denoise dialplan function (<a rel="nofollow" target="_blank" href="https://wiki.asterisk.org/wiki/display/AST/Asterisk+10+Function_DENOISE">https://wiki.asterisk.org/wiki/display/AST/Asterisk+10+Function_DENOISE</a>), we can use libav for noise filtering on the muxed audio. I'm willing to contribute if one of the devs would help me out regarding implementation. Any comments?<br>
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