Hi All,
I just ran tx_voice and rx_voice.And I wanted to transmit a music and
receive it using Basic RX/TX. However, I got the error:
$ sudo ./tx_voice.py -f 30M -I music.pcm -T A -v
gr_fir_fff: using SSE
bits per symbol = 1
Gaussian filter bt = 0.35
Using TX d’board A: Basic Tx
Tx amplitude 12000
modulation: gmsk_mod
bitrate: 50kb/s
samples/symbol: 5
interp: 512
Tx Frequency: 30M
ALSA lib pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM musicpcm.pcm
audio_alsa_source[musicpcm.pcm]: No such file or directory
Traceback (most recent call last):
File “./tx_voice.py”, line 150, in
main()
File “./tx_voice.py”, line 121, in main
tb = my_top_block(mods[options.modulation], options)
File “./tx_voice.py”, line 69, in init
self.audio_rx = audio_rx(options.audio_input)
File “./tx_voice.py”, line 52, in init
src = audio.source(sample_rate, audio_input_dev)
File “/usr/lib64/python2.5/site-packages/gnuradio/audio_alsa.py”, line
219, in source
return _audio_alsa.source(*args)
RuntimeError: audio_alsa_source
Does anyone know how to solve it? I don’t quite understand.
Thanks in advance!
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