Re: [OpenSIPStack] Cpmfort Noise Support
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Re: [OpenSIPStack] Cpmfort Noise Support
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From: Ilian J. C. P. <ip...@so...> - 2007-05-30 09:53:15
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Hi all, I have exposed the setting of silence detection mode and audio jitter delay in ATLSIP and SoftPhoneInterface. Here are the methods: DisableSilenceDetection() - Disables silence detection. Disables CNG as well. EnableFixedSilenceDetection( ULONG threshold ) - Enables fixed silence detection. Any sound level below the threshold is treated as silence (and CN is generated as a result). Don't use too high threshold values or you'll only hear comfort noise. Try threshold=3 as suggested by Whit in another thread. EnableFixedSilenceDetectionEx( ULONG threshold , ULONG signalDeadband, ULONG silenceDeadband ) - An extended version of the previous method. Don't tinker with this unless you know what you're doing. For reference on how signalDeadband and silenceDeadband are used, look in OpalSilenceDetector::ReceivedPacket(). EnableAdaptiveSilenceDetection( ULONG adaptivePeriod ) - Enables an adaptive silence detection. Supposedly this enables the threshold to *adapt* to the current sound level every adaptivePeriod milliseconds. However, its silence detection doesn't seem to be very effective (at least in my machine). I'll look into this further to see what's wrong. This mode with adaptivePeriod=4800 is the default mode for ATLSIP. EnableAdaptiveSilenceDetectionEx( ULONG adaptivePeriod, ULONG signalDeadband, ULONG silenceDeadband ) - An extended version of the previous method. Don't tinker with this unless you know what you're doing. For reference on how signalDeadband and silenceDeadband are used, look in OpalSilenceDetector::ReceivedPacket(). SetAudioJitterDelay( ULONG minDelay, ULONG maxDelay ) - Sets audio jitter delay settings. Regards, Ilian Ilian Jeri C. Pinzon wrote: > Will prioritize this request. This should be available by tomorrow or on > early Thursday tops. > > Regards, > Ilian > > Joegen E. Baclor wrote: > >> Hi Ilian, >> >> Can you provide an ETC for exposing Jitter and Silent Detection params >> in ATLSIP? Seems like a popular request. >> >> Joegen >> >> >> Ilian Jeri C. Pinzon wrote: >> >> >>> Hi, >>> >>> We haven't exposed this yet but we will soon. Please wait for updates >>> in this list. >>> >>> For the meantime, please refer to the attached email on how this can >>> be done. >>> >>> Thanks. >>> >>> Regards, >>> Ilian >>> >>> Yacine Auczone wrote: >>> >>> >>>> Hi All, >>>> First, Thanks a lot for all the great job you are doing for >>>> OpenSipStack and AtlSIP >>>> I'm doing some devlopement test with the Softphone ActiveX, the >>>> quality is very good and no bugs detected, the only thing is that the >>>> softphone is doing by default some VAD and it is not transmiting the >>>> silence, so there is no Comfort Noise generation sent whene the >>>> calling party stop talking. i heard about a new ActiveX version which >>>> will be available and gives the option to enable or disable CNG, is it >>>> ready? if yes can i have it please? >>>> Other Thing, on my Asterisk Server only G729 Work and not G729A >>>> What's Wrong ? >>>> >>>> >>>> >>>> >>>> ------------------------------------------------------------------------ >>>> Avec Windows Live Spaces, publiez directement des messages >>>> électroniques sur votre blog ou ajoutez-y des photos, des blagues et >>>> d'autres infos. C'est gratuit ! >>>> <http://clk.atdmt.com/MSN/go/msnnksac0030000001msn/direct/01/?href=http://www.imagine-msn.com/spaces> >>>> >>>> ------------------------------------------------------------------------ >>>> >>>> ------------------------------------------------------------------------- >>>> >>>> This SF.net email is sponsored by DB2 Express >>>> Download DB2 Express C - the FREE version of DB2 express and take >>>> control of your XML. No limits. Just data. Click to get it now. >>>> http://sourceforge.net/powerbar/db2/ >>>> ------------------------------------------------------------------------ >>>> >>>> _______________________________________________ >>>> opensipstack-devel mailing list >>>> ope...@li... >>>> https://lists.sourceforge.net/lists/listinfo/opensipstack-devel >>>> >>>> ------------------------------------------------------------------------ >>>> >>>> No virus found in this incoming message. >>>> Checked by AVG Free Edition. Version: 7.5.472 / Virus Database: >>>> 269.8.1/822 - Release Date: 5/28/2007 11:40 AM >>>> >>>> >>>> >>> ------------------------------------------------------------------------ >>> >>> Subject: >>> [Fwd: Re: [OpenSIPStack] Audio problems - Jitter and Comfort Noise] >>> From: >>> "Joegen E. Baclor" <joe...@gm...> >>> Date: >>> Tue, 29 May 2007 18:26:21 +0800 >>> To: >>> "Ilian Jeri C. Pinzon" <ip...@so...> >>> >>> To: >>> "Ilian Jeri C. Pinzon" <ip...@so...> >>> >>> >>> >>> >>> ------------------------------------------------------------------------ >>> >>> Subject: >>> Re: [OpenSIPStack] Audio problems - Jitter and Comfort Noise >>> From: >>> "Joegen E. Baclor" <joe...@gm...> >>> Date: >>> Thu, 12 Apr 2007 16:40:04 +0800 >>> To: >>> ope...@li... >>> >>> To: >>> ope...@li... >>> >>> >>> Whit, >>> >>> Good to hear you nailed it! Can't wait to see your contributions if >>> you get the chance to expose the other setters/accessors in ATLSIP. >>> >>> >>> >>> Whit Thiele wrote: >>> >>> >>>> Joegen, >>>> >>>> Thanks for the help. I thought I'd send the list an update on what >>>> solved my >>>> problem. I changed the Silence Detector to Fixed with a threshold of >>>> 3. This >>>> eliminated all the problems! It seems that the adaptive silence >>>> detector was >>>> constantly incrementing and started affecting things about 10-15 seconds >>>> into a conversation! >>>> >>>> I'll probably put in the ability to change the jitterbuffer and silence >>>> detector into the ATLSIP library and send this in to the project in >>>> the next >>>> couple weeks... >>>> >>>> >>>> Whit >>>> >>>> >>>> >>>> -----Original Message----- >>>> From: ope...@li... >>>> [mailto:ope...@li...] On Behalf Of >>>> Joegen E. Baclor >>>> Sent: Tuesday, April 10, 2007 9:36 PM >>>> To: ope...@li... >>>> Subject: Re: [OpenSIPStack] Audio problems - Jitter and Comfort Noise >>>> >>>> Whit, >>>> >>>> It is probably best to ask this question to >>>> ope...@li.... However, here's how to set >>>> the silence detection in code. >>>> >>>> >>>> >>>> OpalSilenceDetector::Param param; >>>> param.Mode = OpalSilenceDetector::NoSilenceDetection; >>>> sfManager.SetSilenceDetectParams( params ); >>>> >>>> >>>> >>>> >>>> Hope that helps. >>>> >>>> de...@wh... wrote: >>>> >>>> >>>> >>>>> Joegen, >>>>> >>>>> Thanks for the reply. I've been trying different jitterbuffer >>>>> settings as >>>>> >>>>> >>>>> >>>> well >>>> >>>> >>>> >>>>> as changing the number soundChannelBuffers to a number of different >>>>> >>>>> >>>>> >>>> settings >>>> >>>> >>>> >>>>> which I came across in some online >>>>> Opal documentation ( >>>>> >>>>> >>>>> >>>>> >>>> http://www.openh323.org/pipermail/openh323/Week-of-Mon-20051219/076004.html >>>> >>>> ) >>>> >>>> >>>> >>>>> I've tried setting the jitter buffer to minimums 25 through to 500 >>>>> and the >>>>> >>>>> >>>>> >>>> depth >>>> >>>> >>>> >>>>> to as high as 15 but nothing is helping. As I described before, I >>>>> can get >>>>> >>>>> >>>>> >>>> about >>>> >>>> >>>> >>>>> 10-15 consecutive seconds of decent voice quality and then it gets very >>>>> >>>>> >>>>> >>>> choppy. >>>> >>>> >>>>> Is anyone else experiencing this? >>>>> >>>>> I am wondering if it may have something to do with the Silence >>>>> detection >>>>> >>>>> >>>>> >>>> portion >>>> >>>> >>>> >>>>> of Opal. I've noticed in the opal.log file that the Silence Threshold >>>>> >>>>> >>>>> >>>> creeps >>>> >>>> >>>> >>>>> upwards the longer the person talks. Is there a way to disable the >>>>> silence >>>>> detector? I could see that there are several Modes (Fixed, Adaptive, >>>>> etc) >>>>> >>>>> >>>>> >>>> for >>>> >>>> >>>> >>>>> it but I can't figure out where this is initialized in the code. >>>>> I may be on the wrong track but I can't figure out this strange >>>>> behavior. >>>>> Any help/ideas/suggestions would be greatly appreciated! >>>>> >>>>> Whit >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> -----Original Message----- >>>>> From: ope...@li... >>>>> [mailto:ope...@li...] On Behalf Of >>>>> >>>>> >>>>> >>>> Joegen >>>> >>>> >>>> >>>>> E. Baclor >>>>> Sent: Monday, April 09, 2007 5:19 AM >>>>> To: ope...@li... >>>>> Subject: Re: [OpenSIPStack] Audio problems - Jitter and Comfort Noise >>>>> >>>>> de...@wh... wrote: >>>>> >>>>> >>>>> >>>>>> Members, >>>>>> >>>>>> I'm doing some testing with the ATLSIP and opensipstack libraries >>>>>> and so >>>>>> >>>>>> >>>>>> >>>> far >>>> >>>> >>>> >>>>>> with pretty good success. I have written a softphone in C# using the >>>>>> >>>>>> >>>>>> >>>> samples >>>> >>>> >>>> >>>>>> provided, however I have a strange issue which I think is related to >>>>>> >>>>>> >>>>>> >>>> jitter >>>> >>>> >>>> >>>>>> and/or comfort noise: >>>>>> >>>>>> Setup: >>>>>> C# Softphone ----> Asterisk ---> PRI -----> Telco >>>>>> >>>>>> Once I make a call, the system works fine except if the person >>>>>> using the >>>>>> softphone talks for more then about 10-15 seconds (in a row without >>>>>> being >>>>>> interupted). Then, the audio starts to break up and the person on the >>>>>> >>>>>> >>>>>> >>>> telco >>>> >>>> >>>> >>>>>> side can't make out what they are saying. Sometimes this situation is >>>>>> >>>>>> >>>>>> >>>> reversed >>>> >>>> >>>> >>>>>> and the person on the softphone can't make out the person on the telco >>>>>> >>>>>> >>>>>> >>>> side. >>>> >>>> >>>>>> By the way, there aren't any problems with the telco or asterisk >>>>>> setup as >>>>>> >>>>>> >>>>>> >>>> I >>>> >>>> >>>> >>>>>> >>>>>> >>>>>> >>>>> have >>>>> >>>>> >>>>> >>>>>> SIP hardphones using the system with no problems. >>>>>> >>>>>> So my question is: >>>>>> >>>>>> >>>>>> 1. Can I send confort noise during silence breaks? >>>>>> >>>>>> >>>>>> >>>>>> >>>>> CNG is a codec functionality and is not manually generated by the >>>>> stack. >>>>> >>>>> >>>>> >>>>> >>>>> >>>>>> 2. Where can I tweak the jitter-buffer or comfort noise settings? >>>>>> Is this >>>>>> >>>>>> >>>>>> >>>> done >>>> >>>> >>>> >>>>>> >>>>>> >>>>>> >>>>> SoftPhoneManager::SetAudioJitterDelay(). It is not yet exposed an the >>>>> ActiveX properties. Feel free to send in a patch if you get the chance >>>>> to expose it. >>>>> >>>>> >>>>> >>>>> >>>>>> in the code itself? >>>>>> 3. Maybe I'm on the wrong track and any suggestions are welcome! >>>>>> >>>>>> >>>>>> Look forward to working more with everyone on this exciting project! >>>>>> >>>>>> Whit >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> ------------------------------------------------------------------------- >>>>>> >>>>>> Take Surveys. Earn Cash. 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Influence the Future of IT >>>> Join SourceForge.net's Techsay panel and you'll get the chance to >>>> share your >>>> opinions on IT & business topics through brief surveys-and earn cash >>>> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV >>>> >>>> _______________________________________________ >>>> opensipstack-devel mailing list >>>> ope...@li... >>>> https://lists.sourceforge.net/lists/listinfo/opensipstack-devel >>>> >>>> >>>> >>>> >>>> >>> ------------------------------------------------------------------------ >>> >>> No virus found in this incoming message. >>> Checked by AVG Free Edition. >>> Version: 7.5.472 / Virus Database: 269.8.1/822 - Release Date: 5/28/2007 11:40 AM >>> >>> ------------------------------------------------------------------------ >>> >>> ------------------------------------------------------------------------- >>> This SF.net email is sponsored by DB2 Express >>> Download DB2 Express C - the FREE version of DB2 express and take >>> control of your XML. No limits. Just data. Click to get it now. >>> http://sourceforge.net/powerbar/db2/ >>> ------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> opensipstack-devel mailing list >>> ope...@li... >>> https://lists.sourceforge.net/lists/listinfo/opensipstack-devel >>> >>> >>> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by DB2 Express >> Download DB2 Express C - the FREE version of DB2 express and take >> control of your XML. No limits. Just data. Click to get it now. >> http://sourceforge.net/powerbar/db2/ >> _______________________________________________ >> opensipstack-devel mailing list >> ope...@li... >> https://lists.sourceforge.net/lists/listinfo/opensipstack-devel >> >> >> >> > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > opensipstack-devel mailing list > ope...@li... > https://lists.sourceforge.net/lists/listinfo/opensipstack-devel > > > |
