Hello everyone, I am quite new to this and to gnuradio so excuse me if I have some knowledge gaps.
Currently, I am trying to send data over ultrasound signals based on [1], using the audio sink and several sources. The problem is that I get often consecutive audio underruns (for several seconds straight). This is my flowgraph: <http://gnuradio.4.n7.nabble.com/file/n60547/flowgraph.jpg> The TunSource just reads data from a Tun-Device but I get these underruns with other blocks like the depicted Socked PDU or even a File Source, too (though not as frequently). So it basically boils down to (Byte?)-Source -> GFSK Mod -> Rational Resampler -> Frequency Xlating FIR Filter-> Audio Sink. I already tried using other sample rates (44.1kHZ, 48kHz), slightly different sample rates than the Audio Sink uses or other devices like "hw:1" or "front:1". But none of this helped. My assumption is that this is a "two clock problem" which I've read about in other posts. Unfortunately I couldn't find any solution to this. I really hope you can help me and thanks in advance. Regards Paul [1] https://www.anfractuosity.com/projects/ultrasound-networking/ -- View this message in context: http://gnuradio.4.n7.nabble.com/Audio-underrun-when-using-Audio-Sink-tp60547.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
