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
24 from gnuradio import audio
25 from gnuradio.vocoder import gsm_full_rate
29 src = audio.source(8000)
30 src_scale = gr.multiply_const_ff(32767)
31 f2s = gr.float_to_short ()
32 enc = gsm_full_rate.encode_sp()
33 dec = gsm_full_rate.decode_ps()
34 s2f = gr.short_to_float ()
35 sink_scale = gr.multiply_const_ff(1.0/32767.)
36 sink = audio.sink(8000)
37 fg.connect(src, src_scale, f2s, enc, dec, s2f, sink_scale, sink)
40 if __name__ == '__main__':
43 raw_input ('Press Enter to exit: ')