Re: [Discuss-gnuradio] Sound input using mic / line in problem
On Fri, Jul 3, 2009 at 1:05 PM, John Gilmore g...@toad.com wrote: gr-audio-oss and gr-audio-jack. The sound module being used is snd_hda_intel. In my experience, there seem to be endless permutations of problems with snd_hda_intel (HD Audio). Even in newer Linux releases like Ubuntu 9.04. I don't think I have a single machine on which snd_hda_intel is trouble-free -- including an HP Athlon64 desktop, a Dell Atom netbook, and an Acer Atom netbook. (which may or may not have anything to do with your problem.) John Thanks for the pointer. Adding a line in /etc/modprobe.d/alsa-base which specified the model of my computer helped (Dell Precision), more details here https://help.ubuntu.com/community/HdaIntelSoundHowto. However, the inputs in ALSA don't get correctly mapped to the actual physical inputs. For eg, the Front Mic on ALSA was actually the rear line-in. This only solved the problem of being able to get the example program running without any device busy errors or lockups. To be able to actually record sound, I had to install jack and play around with the settings for a bit. When using gnuradio I also added audio_module = audio_jack to the gnuradio config.conf file. Karthik ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Sound input using mic / line in problem
I am trying to run the audio_to_file.py example file to capture some audio signals. I plan to feed some slowly changing voltage signals through my mic/line in audio input and use those along with the USRP signals (after doing the necessary fractional resampling). I tried running the example with the following options ./audio_to_file.py -I plughw:0,0 test.dat The output says, audio: using audio_alsa and the program does nothing else. Pressing Ctrl-C doesn't terminate the program and I have to use pkill python to kill it. The file size of test.dat remains at 0 bytes. I am using Ubuntu 8.04 and gnuradio r10529. gnuradio was built with gr-audio-alsa, gr-audio-oss and gr-audio-jack. The sound module being used is snd_hda_intel. I also tried to use oss by changing audio_module = audio_oss in ~/.gnuradio/config.conf and end up getting the following error. The error remains the same regardless of using plughw:0,0 and hw:0,0 audio: using audio_oss audio_oss_source: plughw:0,0: No such file or directory Traceback (most recent call last): File ./audio_to_file.py, line 61, in module my_top_block().run() File ./audio_to_file.py, line 49, in __init__ src = audio.source (sample_rate, options.audio_input) File /usr/local/lib/python2.5/site-packages/gnuradio/audio_oss.py, line 299, in source return _audio_oss.source(*args, **kwargs) RuntimeError: audio_oss_source Any ideas of what might be going on? Thanks, Karthik ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Sound input using mic / line in problem
gr-audio-oss and gr-audio-jack. The sound module being used is snd_hda_intel. In my experience, there seem to be endless permutations of problems with snd_hda_intel (HD Audio). Even in newer Linux releases like Ubuntu 9.04. I don't think I have a single machine on which snd_hda_intel is trouble-free -- including an HP Athlon64 desktop, a Dell Atom netbook, and an Acer Atom netbook. (which may or may not have anything to do with your problem.) John ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
