[pjsip] PJSIP on Symbian, the audio latency issue as compared to Fring, on N82

Nanang Izzuddin nanang at pjsip.org
Wed Apr 30 01:05:14 EDT 2008


Hi Alex,

About jitter buffer optimization integration progress,
please check ticket #505 (http://trac.pjsip.org/repos/ticket/505)

Regards,
nanang


2008/4/30 Alex T. W. LEUNG <alexleung at astri.org>:
> Hi Benny and pjsip community members,
>
> I have loaded Fring and made a skype-out call on N82. I also experienced
> similar (~1sec) voice latency. One speculation might be that Fring is
> also being negatively impacted by the Audio Streaming API. Hope this
> piece of information may bring some value to those who are working on
> this problem.
>
> Benny, regarding your below comment on jitter buffer optimization, would
> you please tell me since which SVN version (or date) has it been
> integrated? (I would like to know how latest is latest enough.)
>
> Alex Leung.
>
> -----Original Message-----
> From: pjsip-bounces at lists.pjsip.org
> [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Benny Prijono
> Sent: Monday, April 21, 2008 6:38 PM
> To: pjsip list
> Subject: Re: [pjsip] PJSIP on Symbian,any pointers for tackling the
> audio optimization challenge?
>
>
> On Mon, Apr 21, 2008 at 3:20 AM, Alex T. W. LEUNG <alexleung at astri.org>
> wrote:
>>
>> Dear all,
>>
>> I also experienced the below "audio latency" issue. Any speculations
>> on the possible root cause(s) of this?
>
> Frankly I've little idea on this, but Yohannes (on this list) had
> suggested to me that it may be due to the audio backend that we use (the
> Audio Streaming API) and we may be able to get better latency with using
> Audio Proxy Server API instead. Unfortunately we haven't had time or
> resource to experiment with this so this has to wait until we're done
> with version 1.0.
>
> But it may help if you use the latest version of PJSIP from the SVN
> trunk, since we've done a bit of optimization in the jitter buffer to
> reduce the latency.
>
>> Anyway, I would like to express my gratitude for the progress pjsip
>> has made so far on the symbian platform. It certainly makes my N82
>> phone more interesting and useful.
>
> Great that you find it useful!
>
> Cheers
>  Benny
>
>
>> Alex Leung.
>
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