Mod_Conference Improvement (Denoise)
Hi, 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 ( https://wiki.asterisk.org/wiki/display/AST/Asterisk+10+Function_DENOISE), 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? -Regards -- I'd love to change the world, but they wont gimme the source code to it
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: conference <conf name> energy <member_id|all|last|non_moderator> [<newval>] 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. -MC On Tue, Jan 15, 2013 at 4:24 PM, Usama Zaidi <itsusama@gmail.com> wrote:
Hi,
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 ( https://wiki.asterisk.org/wiki/display/AST/Asterisk+10+Function_DENOISE), 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?
-Regards
-- I'd love to change the world, but they wont gimme the source code to it _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
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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. Mike On Jan 15, 2013, at 8:03 PM, Michael Collins <msc@freeswitch.org> wrote:
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:
conference <conf name> energy <member_id|all|last|non_moderator> [<newval>]
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.
-MC
On Tue, Jan 15, 2013 at 4:24 PM, Usama Zaidi <itsusama@gmail.com> wrote: Hi,
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 (https://wiki.asterisk.org/wiki/display/AST/Asterisk+10+Function_DENOISE), 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?
-Regards
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. On Tue, Jan 15, 2013 at 8:58 PM, Michael Jerris <mike@jerris.com> wrote:
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.
Mike
On Jan 15, 2013, at 8:03 PM, Michael Collins <msc@freeswitch.org> wrote:
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:
conference <conf name> energy <member_id|all|last|non_moderator> [<newval>]
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.
-MC
On Tue, Jan 15, 2013 at 4:24 PM, Usama Zaidi <itsusama@gmail.com> wrote:
Hi,
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 ( https://wiki.asterisk.org/wiki/display/AST/Asterisk+10+Function_DENOISE), 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?
-Regards
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I think the best way to solve this is by doing AGC first. This should make sure audio level is similar for all participants. ________________________________ From: Anthony Minessale <anthony.minessale@gmail.com> To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org> Sent: Wednesday, January 16, 2013 6:23 PM Subject: Re: [Freeswitch-users] Mod_Conference Improvement (Denoise) 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. On Tue, Jan 15, 2013 at 8:58 PM, Michael Jerris <mike@jerris.com> wrote: 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.
Mike
On Jan 15, 2013, at 8:03 PM, Michael Collins <msc@freeswitch.org> wrote:
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:
conference <conf name> energy <member_id|all|last|non_moderator> [<newval>]
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.
-MC
On Tue, Jan 15, 2013 at 4:24 PM, Usama Zaidi <itsusama@gmail.com> wrote:
Hi,
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 (https://wiki.asterisk.org/wiki/display/AST/Asterisk+10+Function_DENOISE), 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?
-Regards
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
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-- Anthony Minessale II FreeSWITCH http://www.freeswitch.org/ ClueCon http://www.cluecon.com/ Twitter: http://twitter.com/FreeSWITCH_wire AIM: anthm MSN:anthony_minessale@hotmail.com GTALK/JABBER/PAYPAL:anthony.minessale@gmail.com IRC: irc.freenode.net #freeswitch FreeSWITCH Developer Conference sip:888@conference.freeswitch.org googletalk:conf+888@conference.freeswitch.org pstn:+19193869900 _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
That feature already exists, but appears to still be undocumented. Added just over a year ago. http://wiki.freeswitch.org/wiki/FS_weekly_2011_03_23 William King Senior Engineer Quentus Technologies, INC 1037 NE 65th St Suite 273 Seattle, WA 98115 Main: (877) 211-9337 Office: (206) 388-4772 Cell: (253) 686-5518 william.king@quentustech.com On 01/16/2013 10:29 PM, Valer Nur wrote:
I think the best way to solve this is by doing AGC first. This should make sure audio level is similar for all participants.
------------------------------------------------------------------------ *From:* Anthony Minessale <anthony.minessale@gmail.com> *To:* FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org> *Sent:* Wednesday, January 16, 2013 6:23 PM *Subject:* Re: [Freeswitch-users] Mod_Conference Improvement (Denoise)
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.
On Tue, Jan 15, 2013 at 8:58 PM, Michael Jerris <mike@jerris.com <mailto:mike@jerris.com>> wrote:
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.
Mike
On Jan 15, 2013, at 8:03 PM, Michael Collins <msc@freeswitch.org <mailto:msc@freeswitch.org>> wrote:
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:
conference <conf name> energy <member_id|all|last|non_moderator> [<newval>]
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.
-MC
On Tue, Jan 15, 2013 at 4:24 PM, Usama Zaidi <itsusama@gmail.com <mailto:itsusama@gmail.com>> wrote:
Hi,
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 (https://wiki.asterisk.org/wiki/display/AST/Asterisk+10+Function_DENOISE), 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?
-Regards
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org <mailto:consulting@freeswitch.org> http://www.freeswitchsolutions.com
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The problem with agc is thatit changed levels a lot within the same speaker and thus lessened the sound quality when I was using it. William King <william.king@quentustech.com> wrote:
That feature already exists, but appears to still be undocumented. Added just over a year ago. http://wiki.freeswitch.org/wiki/FS_weekly_2011_03_23
William King Senior Engineer Quentus Technologies, INC 1037 NE 65th St Suite 273 Seattle, WA 98115 Main: (877) 211-9337 Office: (206) 388-4772 Cell: (253) 686-5518 william.king@quentustech.com
On 01/16/2013 10:29 PM, Valer Nur wrote:
I think the best way to solve this is by doing AGC first. This should make sure audio level is similar for all participants.
------------------------------------------------------------------------ *From:* Anthony Minessale <anthony.minessale@gmail.com> *To:* FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org> *Sent:* Wednesday, January 16, 2013 6:23 PM *Subject:* Re: [Freeswitch-users] Mod_Conference Improvement (Denoise)
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.
On Tue, Jan 15, 2013 at 8:58 PM, Michael Jerris <mike@jerris.com <mailto:mike@jerris.com>> wrote:
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.
Mike
On Jan 15, 2013, at 8:03 PM, Michael Collins <msc@freeswitch.org <mailto:msc@freeswitch.org>> wrote:
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:
conference <conf name> energy <member_id|all|last|non_moderator> [<newval>]
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.
-MC
On Tue, Jan 15, 2013 at 4:24 PM, Usama Zaidi <itsusama@gmail.com <mailto:itsusama@gmail.com>> wrote:
Hi,
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 (https://wiki.asterisk.org/wiki/display/AST/Asterisk+10+Function_DENOISE), 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?
-Regards
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org <mailto:consulting@freeswitch.org> http://www.freeswitchsolutions.com
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If you are going to do any noise filtering of a call it should be done prior to messing with the volume such as agc. On Jan 17, 2013, at 1:29 AM, Valer Nur <valernur@yahoo.com> wrote:
I think the best way to solve this is by doing AGC first. This should make sure audio level is similar for all participants.
participants (7)
-
Anthony Minessale
-
covici＠ccs.covici.com
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Michael Collins
-
Michael Jerris
-
Usama Zaidi
-
Valer Nur
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William King