On 05/29/2017 04:49 AM, Usman Haider wrote: > Hi, > > I am using GNU Radio on beaglebone black (BBB). I have transmitter and > receiver flowgraph with audio sink audio source. When I run the > flowgraphs on laptop or desktops I receive all the data packets > correctly. But when I run either receiver or transmitter flowgraph on > BBB there are intermittent packet drops. Packet loss is very small but > it is there. There are no audio underruns or audio overruns. I am using > a usb sound card with BBB. > > I am using jessie 8.6 on BBB, GNU Radio version is 3.7.10.1. Enabled > components are shown below > > $ gnuradio-config-info --enabled-components > python-support;testing-support;volk;gnuradio-runtime;gr-blocks;gnuradio-companion;gr-fft;gr-filter;gr-analog;gr-digital;gr-audio;* > alsa;* oss;* jack;* > portaudio;gr-channels;gr-noaa;gr-pager;gr-utils;gr-video-sdl;gr-vocoder;gr-fcd;gr-wavelet;gr-wxgui;gr-zeromq > > > Have anyone else tried using usb audio sound card on BBB with gnuradio > before? Any idea what could be wrong? Thanks > > -- > Usman
If you're using jessie, wheezy or ubuntu, apt-get install cpufrequtils and set the frequency of the CPU - or the governor to 'performance' - if you haven't done so already. It installs the cpufreq-info and cpufreq-set programs. I forget how to use them. It might not be your problem - check your memory usage - if you have swap you might be thrashing. I can't remember if I used the USB sound card on the BBB - or on the Odroid. I have a HDMI monitor with speakers so I haven't use the USB sound card for awhile. Check to see if pulse audio is installed apt list --installed | grep pluseaudio -- Cinaed > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
