Re: [Linphone-developers] question about rtp packets

[Simon Morlat]

16bit audio is never transmitted in rtp packets. It is encoded before, with 
for example the mulaw or alaw codec that transform a 16bit sample into an 
8bit sample.

Simon


Le Mardi 14 Mars 2006 16:17, meng hongling a écrit :
> when I capture rtp packets with ethereal.I find that each payload contains
> 160 bytes while
> there are 50 packets per second.
> that means
> 160*50=8000 bytes per second.
> but I think it should be
> 8000*2=160000 bytes(sound card supports 16 bits adc).
> and in msossread.c
> snd_card_open_r(r->sndcard,16,0,r->freq)
> this indicate sound card use 16 bits sampling.
> I don't know why?Is there something wrong about my understanding?
>
> _________________________________________________________________
> 与联机的朋友进行交流，请使用 MSN Messenger:  http://messenger.msn.com/cn
>
>
>
> _______________________________________________
> Linphone-developers mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/linphone-developers