diff options
Diffstat (limited to 'gr-cvsd-vocoder/src/python')
| -rw-r--r-- | gr-cvsd-vocoder/src/python/.gitignore | 3 | ||||
| -rw-r--r-- | gr-cvsd-vocoder/src/python/Makefile.am | 36 | ||||
| -rw-r--r-- | gr-cvsd-vocoder/src/python/cvsd.py | 87 | ||||
| -rwxr-xr-x | gr-cvsd-vocoder/src/python/encdec.py | 69 | ||||
| -rwxr-xr-x | gr-cvsd-vocoder/src/python/qa_cvsd_vocoder.py | 115 | ||||
| -rw-r--r-- | gr-cvsd-vocoder/src/python/run_tests.in | 10 |
6 files changed, 0 insertions, 320 deletions
diff --git a/gr-cvsd-vocoder/src/python/.gitignore b/gr-cvsd-vocoder/src/python/.gitignore deleted file mode 100644 index 604b402c5..000000000 --- a/gr-cvsd-vocoder/src/python/.gitignore +++ /dev/null @@ -1,3 +0,0 @@ -/Makefile -/Makefile.in -/run_tests diff --git a/gr-cvsd-vocoder/src/python/Makefile.am b/gr-cvsd-vocoder/src/python/Makefile.am deleted file mode 100644 index e6fd74828..000000000 --- a/gr-cvsd-vocoder/src/python/Makefile.am +++ /dev/null @@ -1,36 +0,0 @@ -# -# Copyright 2004,2009,2010 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 3, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -include $(top_srcdir)/Makefile.common - -EXTRA_DIST += run_tests.in -DISTCLEANFILES += run_tests -TESTS = run_tests - - -grblkspythondir = $(grpythondir)/blks2impl - -grblkspython_PYTHON = \ - cvsd.py - -noinst_PYTHON = \ - encdec.py \ - qa_cvsd_vocoder.py diff --git a/gr-cvsd-vocoder/src/python/cvsd.py b/gr-cvsd-vocoder/src/python/cvsd.py deleted file mode 100644 index 4defbf9a2..000000000 --- a/gr-cvsd-vocoder/src/python/cvsd.py +++ /dev/null @@ -1,87 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2007 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 3, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr -from gnuradio.vocoder import cvsd_vocoder - -class cvsd_encode(gr.hier_block2): - ''' - This is a wrapper for the CVSD encoder that performs interpolation and filtering - necessary to work with the vocoding. It converts an incoming float (+-1) to a short, scales - it (to 32000; slightly below the maximum value), interpolates it, and then vocodes it. - - The incoming sampling rate can be anything, though, of course, the higher the sampling rate and the - higher the interpolation rate are, the better the sound quality. - ''' - - def __init__(self, resample=8, bw=0.5): - ''' - When using the CVSD vocoder, appropriate sampling rates are from 8k to 64k with resampling rates - from 1 to 8. A rate of 8k with a resampling rate of 8 provides a good quality signal. - ''' - - gr.hier_block2.__init__(self, "cvsd_encode", - gr.io_signature(1, 1, gr.sizeof_float), # Input signature - gr.io_signature(1, 1, gr.sizeof_char)) # Output signature - - scale_factor = 32000.0 - self.interp = resample - - src_scale = gr.multiply_const_ff(scale_factor) - taps = gr.firdes.low_pass(self.interp, self.interp, bw, 2*bw) - interp = gr.interp_fir_filter_fff(self.interp, taps) - f2s = gr.float_to_short() - enc = cvsd_vocoder.encode_sb() - - self.connect(self, src_scale, interp, f2s, enc, self) - - -class cvsd_decode(gr.hier_block2): - ''' - This is a wrapper for the CVSD decoder that performs decimation and filtering - necessary to work with the vocoding. It converts an incoming CVSD-encoded short to a float, decodes it - to a float, decimates it, and scales it (by 32000; slightly below the maximum value to avoid clipping). - - The sampling rate can be anything, though, of course, the higher the sampling rate and the - higher the interpolation rate are, the better the sound quality. - ''' - - def __init__(self, resample=8, bw=0.5): - ''' - When using the CVSD vocoder, appropriate sampling rates are from 8k to 64k with resampling rates - from 1 to 8. A rate of 8k with a resampling rate of 8 provides a good quality signal. - ''' - gr.hier_block2.__init__(self, "cvsd_decode", - gr.io_signature(1, 1, gr.sizeof_char), # Input signature - gr.io_signature(1, 1, gr.sizeof_float)) # Output signature - - scale_factor = 32000.0 - self.decim = resample - - dec = cvsd_vocoder.decode_bs() - s2f = gr.short_to_float() - taps = gr.firdes.low_pass(1, 1, bw, 2*bw) - decim = gr.fir_filter_fff(self.decim, taps) - sink_scale = gr.multiply_const_ff(1.0/scale_factor) - - self.connect(self, dec, s2f, decim, sink_scale, self) - diff --git a/gr-cvsd-vocoder/src/python/encdec.py b/gr-cvsd-vocoder/src/python/encdec.py deleted file mode 100755 index 34c153b06..000000000 --- a/gr-cvsd-vocoder/src/python/encdec.py +++ /dev/null @@ -1,69 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2007 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 3, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr, blks2 -from gnuradio import audio -from gnuradio.vocoder import cvsd_vocoder - -def build_graph(): - sample_rate = 8000 - scale_factor = 32000 - - tb = gr.top_block() - src = audio.source(sample_rate, "plughw:0,0") - src_scale = gr.multiply_const_ff(scale_factor) - - interp = blks2.rational_resampler_fff(8, 1) - f2s = gr.float_to_short () - - enc = cvsd_vocoder.encode_sb() - dec = cvsd_vocoder.decode_bs() - - s2f = gr.short_to_float () - decim = blks2.rational_resampler_fff(1, 8) - - sink_scale = gr.multiply_const_ff(1.0/scale_factor) - sink = audio.sink(sample_rate, "plughw:0,0") - - tb.connect(src, src_scale, interp, f2s, enc) - tb.connect(enc, dec, s2f, decim, sink_scale, sink) - - if 0: # debug - tb.conect(src, gr.file_sink(gr.sizeof_float, "source.dat")) - tb.conect(src_scale, gr.file_sink(gr.sizeof_float, "src_scale.dat")) - tb.conect(interp, gr.file_sink(gr.sizeof_float, "interp.dat")) - tb.conect(f2s, gr.file_sink(gr.sizeof_short, "f2s.dat")) - tb.conect(enc, gr.file_sink(gr.sizeof_char, "enc.dat")) - tb.conect(dec, gr.file_sink(gr.sizeof_short, "dec.dat")) - tb.conect(s2f, gr.file_sink(gr.sizeof_float, "s2f.dat")) - tb.conect(decim, gr.file_sink(gr.sizeof_float, "decim.dat")) - tb.conect(sink_scale, gr.file_sink(gr.sizeof_float, "sink_scale.dat")) - - return tb - -if __name__ == '__main__': - tb = build_graph() - print "Enter CTRL-C to stop" - try: - tb.run() - except KeyboardInterrupt: - pass diff --git a/gr-cvsd-vocoder/src/python/qa_cvsd_vocoder.py b/gr-cvsd-vocoder/src/python/qa_cvsd_vocoder.py deleted file mode 100755 index 99a38d946..000000000 --- a/gr-cvsd-vocoder/src/python/qa_cvsd_vocoder.py +++ /dev/null @@ -1,115 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2007,2010 Free Software Foundation, Inc. -# -# This file is part of GNU Radio -# -# GNU Radio is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 3, or (at your option) -# any later version. -# -# GNU Radio is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with GNU Radio; see the file COPYING. If not, write to -# the Free Software Foundation, Inc., 51 Franklin Street, -# Boston, MA 02110-1301, USA. -# - -from gnuradio import gr, gr_unittest, blks2 -import cvsd_vocoder - -class test_cvsd_vocoder (gr_unittest.TestCase): - - def setUp (self): - self.tb = gr.top_block() - - def tearDown (self): - self.tb = None - - """ Disable for now - def test01(self): - sample_rate = 8000 - scale_factor = 32000 - - expected_data = (6.9670547250243192e-21, -2.4088578356895596e-05, - -5.1261918997624889e-05, 7.2410854045301676e-05, - 8.444241393590346e-05, -1.2537107068055775e-05, - 0.00024186755763366818, -0.00060463894624263048, - 0.00064864184241741896, 0.010409165173768997, - 0.0087582804262638092, 0.017965050414204597, - 0.010722399689257145, 0.006602009292691946, - 0.02213001623749733, 0.0079685859382152557, - 0.033707316964864731, 0.027021972462534904, - 0.0086071854457259178, 0.0081678871065378189, - 0.039343506097793579, 0.030671956017613411, - 0.029626710340380669, 0.020126519724726677, - 0.023636780679225922, 0.0064640454947948456, - -0.0038861562497913837, 0.0021134600974619389, - -0.0088051930069923401, -0.00023228264763019979, - -0.033737499266862869, -0.033141419291496277, - -0.037145044654607773, -0.0080892946571111679, - -0.077117636799812317, -0.078382067382335663, - -0.055503919720649719, -0.019355267286300659, - -0.022441385313868523, -0.073706060647964478, - -0.054677654057741165, -0.047119375318288803, - -0.044418536126613617, -0.036084383726119995, - -0.0206278245896101, -0.031200021505355835, - -0.0004070434661116451, 0.0006594572332687676, - -0.016584658995270729, 0.07387717068195343, - -0.0063191778026521206, 0.051200628280639648, - -0.029480356723070145, 0.05176771804690361, - 0.038578659296035767, 0.026550088077783585, - 0.067103870213031769, 0.001888439292088151, - 0.28141644597053528, 0.49543789029121399, - 0.6626054048538208, 0.79180729389190674, - 0.89210402965545654, 0.96999943256378174, - 1.0261462926864624, 1.0267977714538574, - 1.0251555442810059, 1.0265737771987915, - 1.0278496742248535, 1.0208886861801147, - 1.0325057506561279, 0.91415292024612427, - 0.83941859006881714, 0.67373806238174438, - 0.51683622598648071, 0.38949671387672424, - 0.16016888618469238, 0.049505095928907394, - -0.16699212789535522, -0.26886492967605591, - -0.49256673455238342, -0.59178370237350464, - -0.73317724466323853, -0.78922677040100098, - -0.88782668113708496, -0.96708977222442627, - -0.96490746736526489, -0.94962418079376221, - -0.94716215133666992, -0.93755108118057251, - -0.84852480888366699, -0.80485564470291138, - -0.69762390851974487, -0.58398681879043579, - -0.45891636610031128, -0.29681697487831116, - -0.16035343706607819, 0.014823081903159618, - 0.16282452642917633, 0.33802291750907898) - - src = gr.sig_source_f(sample_rate, gr.GR_SIN_WAVE, 200, 1, 0) - head = gr.head(gr.sizeof_float, 100) - src_scale = gr.multiply_const_ff(scale_factor) - - interp = blks2.rational_resampler_fff(8, 1) - f2s = gr.float_to_short () - - enc = cvsd_vocoder.encode_sb() - dec = cvsd_vocoder.decode_bs() - - s2f = gr.short_to_float () - decim = blks2.rational_resampler_fff(1, 8) - - sink_scale = gr.multiply_const_ff(1.0/scale_factor) - sink = gr.vector_sink_f() - - self.tb.connect(src, src_scale, interp, f2s, enc) - self.tb.connect(enc, dec, s2f, decim, sink_scale, head, sink) - self.tb.run() - print sink.data() - - self.assertFloatTuplesAlmostEqual (expected_data, sink.data(), 5) - """ - -if __name__ == '__main__': - gr_unittest.run(test_cvsd_vocoder, "test_cvsd_vocoder.xml") diff --git a/gr-cvsd-vocoder/src/python/run_tests.in b/gr-cvsd-vocoder/src/python/run_tests.in deleted file mode 100644 index be969e287..000000000 --- a/gr-cvsd-vocoder/src/python/run_tests.in +++ /dev/null @@ -1,10 +0,0 @@ -#!/bin/sh - -# 1st parameter is absolute path to component source directory -# 2nd parameter is absolute path to component build directory -# 3rd parameter is path to Python QA directory - -@top_builddir@/run_tests.sh \ - @abs_top_srcdir@/gr-cvsd-vocoder \ - @abs_top_builddir@/gr-cvsd-vocoder \ - @srcdir@ |