search for: speex_jitter

Hi Zachary, Zachary Schneirov a ?crit : > The speex_jitter_buffer.c wrapper seems to maintain (buffer?) one > packet-frame ("current_packet") in addition to the packets already > tracked by the JitterBuffer itself. Why is this necessary? That's in case there's more than one frame per packet. That way, it finds the packet, decod...

Dear speex developers and users, I'm considering adopting the speex jitter buffer for use with a different codec in a voice conferencing system and would be very grateful if those more acquainted with it could help me with some questions. The speex_jitter_buffer.c wrapper seems to maintain (buffer?) one packet-frame ("current_packet") in addition to the packets already tracked by the JitterBuffer itself. Why is this necessary? Correspondingly, how is the internal JitterBuffer state affected by calling jitter_buffer_get (and _tick) b...

hi, this patch should fix the symbian build. /alfred -------------- next part -------------- A non-text attachment was scrubbed... Name: speex-symbian2.patch Type: text/x-patch Size: 2669 bytes Desc: not available Url : http://lists.xiph.org/pipermail/speex-dev/attachments/20061115/5ac4915e/speex-symbian2.bin

...ex\speex_config_types.h >> +..\include\speex\speex_echo.h \epoc32\include\speex\speex_echo.h >> +..\include\speex\speex.h \epoc32\include\speex\speex.h >> +..\include\speex\speex_header.h \epoc32\include\speex\speex_header.h >> +..\include\speex\speex_jitter.h \epoc32\include\speex\speex_jitter.h >> +..\include\speex\speex_preprocess.h \epoc32\include\speex\speex_preprocess.h >> +..\include\speex\speex_stereo.h \epoc32\include\speex\speex_stereo.h >> +..\include\speex\speex_types.h \epoc32\include\speex\speex_...

...oc32\include\speex\speex_config_types.h > +..\include\speex\speex_echo.h \epoc32\include\speex\speex_echo.h > +..\include\speex\speex.h \epoc32\include\speex\speex.h > +..\include\speex\speex_header.h \epoc32\include\speex\speex_header.h > +..\include\speex\speex_jitter.h \epoc32\include\speex\speex_jitter.h > +..\include\speex\speex_preprocess.h \epoc32\include\speex\speex_preprocess.h > +..\include\speex\speex_stereo.h \epoc32\include\speex\speex_stereo.h > +..\include\speex\speex_types.h \epoc32\include\speex\speex_types.h >...

...clude\libc ..\include Index: symbian/bld.inf =================================================================== --- symbian/bld.inf (revision 14293) +++ symbian/bld.inf (working copy) @@ -40,6 +40,7 @@ ..\include\speex\speex_header.h \epoc32\include\speex\speex_header.h ..\include\speex\speex_jitter.h \epoc32\include\speex\speex_jitter.h ..\include\speex\speex_preprocess.h \epoc32\include\speex\speex_preprocess.h +..\include\speex\speex_resampler.h \epoc32\include\speex\speex_resampler.h ..\include\speex\speex_stereo.h \epoc32\include\speex\speex_stereo.h ..\include...

Hi Jean and Steve, Can you tell me whether the jitter filter / buffer is adaptive type, I saw the description of speex_jitter.h say it is "adaptive", anyone of the group has implemented it and confirm it. Thank you all. Regards, Danny Chan -----Original Message----- From: speex-dev-bounces@xiph.org [mailto:speex-dev-bounces@xiph.org] On Behalf Of Jean-Marc Valin Sent: Tuesday, September 07, 2004 11:32 PM...

What is the best way to pick a prebuffering length for a streaming audio application using UDP transport? I'm using Speex in a VoIP application with RTP transport, currently with a fixed 500ms prebuffer on the playback side. However, I'd like something a bit more adaptive to accomodate high-jitter connections. For example, in one test configuration there is a very low average

...I need to stay beneath the MTU. But should I be going for the largest granularity that fits under the MTU, or should I be going for the smallest granularity that my CPU can churn out? Thanks! -david Jean-Marc Valin wrote: > Have you looked at the Speex (adaptive) jitter buffer? See > speex_jitter.h > > Jean-Marc > > Le mardi 14 juin 2005 ? 17:50 -0700, David Barrett a ?crit : > >>What is the best way to pick a prebuffering length for a streaming audio >>application using UDP transport? >> >>I'm using Speex in a VoIP application with RTP trans...

...under the MTU, or should I be going for the smallest >>granularity that my CPU can churn out? >> >> >>Thanks! >> >>-david >> >> >>Jean-Marc Valin wrote: >> >>>Have you looked at the Speex (adaptive) jitter buffer? See >>>speex_jitter.h >>> >>> Jean-Marc >>> >>>Le mardi 14 juin 2005 ? 17:50 -0700, David Barrett a ?crit : >>> >>> >>>>What is the best way to pick a prebuffering length for a streaming audio >>>>application using UDP transport? >>&...

...ct. > Thanks, I have made the above changes and the effect seems to be better now. > > I think jitter buffering is more correct way to > solve > > this problem but I think this is not so easy. Is > there > > got any source code to reference from? > > Look for the speex_jitter.h header. I tried to implement it but I don't really understand the parameters for the speex_jitter_get() and speex_jitter_put() function. I have the following questions: Since the second parameter of speex_jitter_put() is a char* and the second parameter of speex_jitter_get() is a short*, d...

Have you looked at the Speex (adaptive) jitter buffer? See speex_jitter.h Jean-Marc Le mardi 14 juin 2005 ? 17:50 -0700, David Barrett a ?crit : > What is the best way to pick a prebuffering length for a streaming audio > application using UDP transport? > > I'm using Speex in a VoIP application with RTP transport, currently with > a fixed 500...

...ket is missing, instead of repeating the previous one, just try decoding by passing NULL instead of the SpeexBits struct. > I think jitter buffering is more correct way to solve > this problem but I think this is not so easy. Is there > got any source code to reference from? Look for the speex_jitter.h header. Jean-Marc > Regards, > YueWeng > > --- "Kleijn, J.S. de" <J.S.d.Kleijn@student.tue.nl> > wrote: > > Hi, > > > > You should implement a jitter buffer, this buffers > > the audio to prevent the 'breaking'. > > &gt...

Hello to everyone! During building speex library for Symbian OS I encountered some problems. All thess problems can be solved by modifying the speex sources. I don't have access to SVN repository of speex, so I will just describe the changes to be done: 1) mmp file in symbian derictory misses windows.c sources. You need to add this string into speex.mmp: SOURCES windows.c 2) Symbian OS

Hi Jean-Marc, I'm implementing a VoIP client and I want to use your codec init. I need to ask you some questions about Speex because I can't get too much information about it on the web. I hope you can help me. 1.- First of all, I want to know if Speex provides a buffer for Jitter..If it does, what can I do to use it in my softphone? 2.- How does Speex manage the packet loss? (In a

...the largest granularity > that fits under the MTU, or should I be going for the smallest > granularity that my CPU can churn out? > > > Thanks! > > -david > > > Jean-Marc Valin wrote: > > Have you looked at the Speex (adaptive) jitter buffer? See > > speex_jitter.h > > > > Jean-Marc > > > > Le mardi 14 juin 2005 ? 17:50 -0700, David Barrett a ?crit : > > > >>What is the best way to pick a prebuffering length for a streaming audio > >>application using UDP transport? > >> > >>I'm usi...

Danny Chan wrote: >Hi Jean and Steve, > >Can you tell me whether the jitter filter / buffer is adaptive type, I >saw the description of speex_jitter.h say it is "adaptive", anyone of >the group has implemented it and confirm it. > > I believe it is adaptive, but no, I haven't used it, because it's coupled only to the speex codec. We're working on a generic application and codec-independent jitter buffer algor...

...g_g] Error 1 ~/src/ffmpeg$ grep speex_header_free /usr/include/speex/* [no matches] ~/src/ffmpeg$ ls -l /usr/include/speex/ total 76 ... -rw-r--r-- 1 root root 13179 2008-05-07 14:14 speex.h -rw-r--r-- 1 root root 3720 2008-05-07 14:14 speex_header.h -rw-r--r-- 1 root root 4456 2008-05-07 14:14 speex_jitter.h -rw-r--r-- 1 root root 6147 2008-05-07 14:14 speex_preprocess.h -rw-r--r-- 1 root root 3190 2008-05-07 14:14 speex_stereo.h -rw-r--r-- 1 root root 4355 2008-05-07 14:14 speex_types.h I got the speex-1.2rc1 tarball from http://speex.org/downloads/ and ./configure, make, and sudo make install w...

Hi, Ok, what you suggest sound logical to me. Currently, I have done a small trick to prevent this problem. What I did is that whenever windows request a voice packet from me and if I do not have the voice packet, I repeat the previous packet. Hence, all the breaking portion is filled with previous packet. This trick seems to work so far. I am not sure what is the side effect. I think jitter

...header_free /usr/include/speex/* > [no matches] > > ~/src/ffmpeg$ ls -l /usr/include/speex/ > total 76 > ... > -rw-r--r-- 1 root root 13179 2008-05-07 14:14 speex.h > -rw-r--r-- 1 root root ?3720 2008-05-07 14:14 speex_header.h > -rw-r--r-- 1 root root ?4456 2008-05-07 14:14 speex_jitter.h > -rw-r--r-- 1 root root ?6147 2008-05-07 14:14 speex_preprocess.h > -rw-r--r-- 1 root root ?3190 2008-05-07 14:14 speex_stereo.h > -rw-r--r-- 1 root root ?4355 2008-05-07 14:14 speex_types.h > > I got the speex-1.2rc1 tarball from http://speex.org/downloads/ and > ./configure,...