3 # Copyright 2005 Free Software Foundation, Inc.
5 # This file is part of GNU Radio
7 # GNU Radio is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3, or (at your option)
12 # GNU Radio is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with GNU Radio; see the file COPYING. If not, write to
19 # the Free Software Foundation, Inc., 51 Franklin Street,
20 # Boston, MA 02110-1301, USA.
23 from gnuradio import gr, blks2
24 from gnuradio import audio
25 from gnuradio.eng_option import eng_option
26 from optparse import OptionParser
28 class my_top_block(gr.top_block):
31 gr.top_block.__init__(self)
33 parser = OptionParser(option_class=eng_option)
34 parser.add_option("-I", "--audio-input", type="string", default="",
35 help="pcm input device name. E.g., hw:0,0 or /dev/dsp")
36 parser.add_option("-O", "--audio-output", type="string", default="",
37 help="pcm output device name. E.g., hw:0,0 or /dev/dsp")
38 (options, args) = parser.parse_args ()
44 src = audio.source(sample_rate, options.audio_input)
45 tx = blks2.digital_voice_tx(self)
46 if_gain = gr.multiply_const_cc(10000)
47 # channel simulator here...
48 rx = blks2.digital_voice_rx(self)
49 dst = audio.sink(sample_rate, options.audio_output)
51 self.connect(src, tx, if_gain, rx, dst)
54 if __name__ == '__main__':
57 except KeyboardInterrupt: