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
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