problem with full duplex voicce Tx on freerunner
lists at seb7.de
Fri Aug 15 14:34:13 CEST 2008
Hi, my previous mail didn't reach the list (I hope this one works),
but if you use SIP the first mail I wrote is of no importance [I
thought you'd be GSM] ;-)
Assuming that you use WiFi you could suffer packet loss.
Make sure yours is the only WiFi-Network on that channel (try to have
a maximum "channel distance" to other WiFis!) and that you keep your
WiFi free of other traffic.
Maybe your codec causes too much traffic for a wireless (if the WiFi
is completly free you still have only arround 70% of the bandwith!)
Another reason could be a to high cpu load, but I guess that you
checked for that already?
If you upload the Moko binaries (and maybe an explanation on how to
setup a connection) I could try to verify that this happens on my
network (54Mbit WiFi, Freerunner + Ubtuntu Laptop) as well.
Can't compile myself as my harddisk has not enough free space for the
Zitat von TARUN CHAPLOT <tarunchaplot at yahoo.com>:
> 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.
Student of Computer Science at the University of Kaiserslautern.
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