problem with full duplex voicce Tx on freerunner
ml at e4net.com
Fri Aug 15 20:17:16 CEST 2008
What Codec are you using?
Rememeber that the ARM has no FPU so if it is a codec that requires floating point the FR is not
going to be able to work in real time.
If you are using G711 or other uncompressed codec the bandwidth may be too high for the network you
are running over.
Lastly you should check that FR can do Full duplex, this is not clear in the docs, and maybe a
simple app that just records voice and sends it back to itself maybe a good test for that.
TARUN CHAPLOT wrote:
> Wanted to add some more details to my previous post. We are having a
> problem with running PJSIP on the neo freerunner, and have tried a
> variety of solutions to fix this but still not successful. The setup
> that we are using is PJSIP on a Mac with OSX, and PJSIP compiled for
> openmoko.I compiled PJSIP for openmoko by setting the env using command
> source /usr/local/openmoko/arm/setup-env
> and ./configure --host=arm-angstrom-linux-gnueabi.
> When we run PJSIP between the Mac and Openmoko, we are encountering two
> The first is that only sound from the Mac goes to the Openmoko, when we
> speak into the Openmoko,
> there is no sound output from the Mac. I have tried
> already to fix this - such as incorporating the
> state (1)voip-handset.state (2) voip-headset.state
> files in /usr/share/openmoko/scenarios/ for full duplex.
> I have also tried with different settings in alsamixer as well.
> The second problem is that the sound quality is very bad. When we speak
> into the Mac, the sound coming from the Openmoko comes out in stutters
> (on and off every half second). It is also full of static. When we try
> a VOIP call directly from mac to mac, it works and sounds fine.
> Further, I recorded a .wav file on Mac OS X and freerunner to auto answer the sip call.
> The recorded .wav file on Mac sounds good enough while the file of freerunner stutters a
> lot and sounds like its missing some packets in between at some interval.
> For reference I am providing the link to get that recorded wav file of freerunner.
> So far nothing works well.
> Thanks in advance for any kind of help.
> ----- Original Message ----
> From: TARUN CHAPLOT <tarunchaplot at yahoo.com>
> To: support at lists.openmoko.org
> Sent: Friday, August 15, 2008 10:47:24 AM
> Subject: problem with full duplex voicce Tx on freerunner
> I am using neo freerunner and have problem with the sound . The voice
> quality is very bad and its not full duplex.
> Please advise me on that so that I can make some proper changes to my
> phone to get better sound quality.
> What kind of tests I can do for checking that my mic and speakers
> working properly.
> Any help would be greatly appreciated.
> Thanks a lot.
> support mailing list
> support at lists.openmoko.org
Jim Morris, http://blog.wolfman.com
More information about the support