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Re: [Discuss-gnuradio] RuntimeError: audio_alsa_source
From: |
Firas A. |
Subject: |
Re: [Discuss-gnuradio] RuntimeError: audio_alsa_source |
Date: |
Wed, 12 Dec 2007 23:32:42 -0800 (PST) |
What is your OS, gnuradio version ?
Firas,
Brook Lin wrote:
>
> 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 <module>
> 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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