3 # Copyright 2007 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, gr_unittest, blks2
26 class qa_cvsd_test (gr_unittest.TestCase):
29 self.tb = gr.top_block()
39 expected_data = (6.9670547250243192e-21, -2.4088578356895596e-05,
40 -5.1261918997624889e-05, 7.2410854045301676e-05,
41 8.444241393590346e-05, -1.2537107068055775e-05,
42 0.00024186755763366818, -0.00060463894624263048,
43 0.00064864184241741896, 0.010409165173768997,
44 0.0087582804262638092, 0.017965050414204597,
45 0.010722399689257145, 0.006602009292691946,
46 0.02213001623749733, 0.0079685859382152557,
47 0.033707316964864731, 0.027021972462534904,
48 0.0086071854457259178, 0.0081678871065378189,
49 0.039343506097793579, 0.030671956017613411,
50 0.029626710340380669, 0.020126519724726677,
51 0.023636780679225922, 0.0064640454947948456,
52 -0.0038861562497913837, 0.0021134600974619389,
53 -0.0088051930069923401, -0.00023228264763019979,
54 -0.033737499266862869, -0.033141419291496277,
55 -0.037145044654607773, -0.0080892946571111679,
56 -0.077117636799812317, -0.078382067382335663,
57 -0.055503919720649719, -0.019355267286300659,
58 -0.022441385313868523, -0.073706060647964478,
59 -0.054677654057741165, -0.047119375318288803,
60 -0.044418536126613617, -0.036084383726119995,
61 -0.0206278245896101, -0.031200021505355835,
62 -0.0004070434661116451, 0.0006594572332687676,
63 -0.016584658995270729, 0.07387717068195343,
64 -0.0063191778026521206, 0.051200628280639648,
65 -0.029480356723070145, 0.05176771804690361,
66 0.038578659296035767, 0.026550088077783585,
67 0.067103870213031769, 0.001888439292088151,
68 0.28141644597053528, 0.49543789029121399,
69 0.6626054048538208, 0.79180729389190674,
70 0.89210402965545654, 0.96999943256378174,
71 1.0261462926864624, 1.0267977714538574,
72 1.0251555442810059, 1.0265737771987915,
73 1.0278496742248535, 1.0208886861801147,
74 1.0325057506561279, 0.91415292024612427,
75 0.83941859006881714, 0.67373806238174438,
76 0.51683622598648071, 0.38949671387672424,
77 0.16016888618469238, 0.049505095928907394,
78 -0.16699212789535522, -0.26886492967605591,
79 -0.49256673455238342, -0.59178370237350464,
80 -0.73317724466323853, -0.78922677040100098,
81 -0.88782668113708496, -0.96708977222442627,
82 -0.96490746736526489, -0.94962418079376221,
83 -0.94716215133666992, -0.93755108118057251,
84 -0.84852480888366699, -0.80485564470291138,
85 -0.69762390851974487, -0.58398681879043579,
86 -0.45891636610031128, -0.29681697487831116,
87 -0.16035343706607819, 0.014823081903159618,
88 0.16282452642917633, 0.33802291750907898)
90 src = gr.sig_source_f(sample_rate, gr.GR_SIN_WAVE, 200, 1, 0)
91 head = gr.head(gr.sizeof_float, 100)
92 src_scale = gr.multiply_const_ff(scale_factor)
94 interp = blks2.rational_resampler_fff(8, 1)
95 f2s = gr.float_to_short ()
97 enc = cvsd_vocoder.encode_sb()
98 dec = cvsd_vocoder.decode_bs()
100 s2f = gr.short_to_float ()
101 decim = blks2.rational_resampler_fff(1, 8)
103 sink_scale = gr.multiply_const_ff(1.0/scale_factor)
104 sink = gr.vector_sink_f()
106 self.tb.connect(src, src_scale, interp, f2s, enc)
107 self.tb.connect(enc, dec, s2f, decim, sink_scale, head, sink)
111 self.assertFloatTuplesAlmostEqual (expected_data, sink.data(), 5)
114 if __name__ == '__main__':