On 10/10/2012 12:21 PM, Pär Särnblad wrote: > Hi > > I've been messing around with the benchmark rx and rx examples to make > digital voice communication using codec2. I am using a message queue > between the audio rx - codec path and the main loop that is adding packet > number and callsigns to the package before sending it on to the tx path. > > All works well until I uses a transmission rate higher than then audiopath > generates because the usrp gets a underrun, and that is expected. What I > didn't expect is that the packages that are sent is corrupted when there is > a underrun.Is this due to problems with not pushing data through the usrp > and things gets stalled there? The package block is padding for usrp . > Should I use the eof flag? How do I solve this problem? >
In general, there should be some padding and and EOB tag at the end your packet/burst to flush it through the DUC chain and to tell the DUC chain that there will be no more samples. > What I want to do is have a queue with different packages and be able to > mix voice and data transmissions. > > Also, the codec2 block is really outdated but have a working build of the > current version and I will submit that when I have tested things out and > fixed a block or blocks to handle different bitrates. > I highly recommend that you take a look at the pre-cog project. Its specifically aimed at solving problems like this. You should be able to channelize different data sources through the simple MAC layer. https://github.com/buoyboy/pre-cog/wiki -josh _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
