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#!/usr/bin/env python
#
# Copyright 2019 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
#
from gnuradio import gr, gr_unittest, analog, blocks
class test_fm_emph(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_001(self):
# Confirm that we can instantiate and run an FM preemphasis block
tb = self.tb
src = analog.sig_source_f(48000, analog.GR_COS_WAVE, 5000.0, 1.0)
op = analog.fm_preemph(fs=48000, tau=75e-6, fh=-1.0)
head = blocks.head(gr.sizeof_float, 100)
dst = blocks.vector_sink_f()
tb.connect(src, op)
tb.connect(op, head)
tb.connect(head, dst)
tb.run()
def test_002(self):
# Confirm that we can instantiate and run an FM deemphasis block
tb = self.tb
src = analog.sig_source_f(48000, analog.GR_COS_WAVE, 5000.0, 1.0)
op = analog.fm_deemph(fs=48000, tau=75e-6)
head = blocks.head(gr.sizeof_float, 100)
dst = blocks.vector_sink_f()
tb.connect(src, op)
tb.connect(op, head)
tb.connect(head, dst)
tb.run()
if __name__ == '__main__':
gr_unittest.run(test_fm_emph)
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