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#!/usr/bin/env python
#
# Copyright 2007,2010,2013 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, blocks
class test_peak_detector2(gr_unittest.TestCase):
def setUp(self):
self.tb = gr.top_block()
def tearDown(self):
self.tb = None
def test_peak1(self):
# print "\n\nTEST 1"
tb = self.tb
n = 10
data = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
9, 8, 7, 6, 5, 4, 3, 2, 1, 0, ] + n * [0, ]
expected_result = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0] + n * [0, ]
src = blocks.vector_source_f(data, False)
regen = blocks.peak_detector2_fb(7.0, 25, 0.001)
dst = blocks.vector_sink_b()
tb.connect(src, regen)
tb.connect(regen, dst)
tb.run()
dst_data = dst.data()
self.assertEqual(expected_result, dst_data)
def test_peak2(self):
# print "\n\nTEST 2"
tb = self.tb
n = 10
data = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
9, 8, 7, 6, 5, 4, 3, 2, 1, 0, ] + n * [0, ]
expected_result = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0] + n * [0, ]
src = blocks.vector_source_f(data, False)
regen = blocks.peak_detector2_fb(
7.0, 1000, 0.001) # called with a LONG window
dst = blocks.vector_sink_b()
tb.connect(src, regen)
tb.connect(regen, dst)
tb.run()
dst_data = dst.data()
# here we know that the block will terminate prematurely, so we compare
# only part of the expected_result
self.assertEqual(expected_result[0:len(dst_data)], dst_data)
def test_peak3(self):
# print "\n\nTEST 3"
tb = self.tb
l = 8100
m = 100
n = 10
data = l * [0, ] + [10, ] + m * [0, ] + [100, ] + n * [0, ]
expected_result = l * [0, ] + [0, ] + m * [0, ] + [1, ] + n * [0, ]
src = blocks.vector_source_f(data, False)
regen = blocks.peak_detector2_fb(7.0, 105, 0.001)
dst = blocks.vector_sink_b()
tb.connect(src, regen)
tb.connect(regen, dst)
tb.run()
dst_data = dst.data()
self.assertEqual(expected_result, dst_data)
def test_peak4(self):
# print "\n\nTEST 4"
tb = self.tb
l = 8100
m = 100
n = 10
data = l * [0, ] + [10, ] + m * [0, ] + [100, ] + n * [0, ]
expected_result = l * [0, ] + [0, ] + m * [0, ] + [1, ] + n * [0, ]
src = blocks.vector_source_f(data, False)
regen = blocks.peak_detector2_fb(7.0, 150, 0.001)
dst = blocks.vector_sink_b()
tb.connect(src, regen)
tb.connect(regen, dst)
tb.run()
dst_data = dst.data()
# here we know that the block will terminate prematurely, so we compare
# only part of the expected_result
self.assertEqual(expected_result[0:len(dst_data)], dst_data)
def test_peak5(self):
#print "\n\nTEST 5"
tb = self.tb
data = [0, 0, 0, 10, 0, 0, 0, 0]
alpha = 0.25
expected_result_peak = [0, 0, 0, 1, 0, 0, 0, 0]
expected_result_average = [0]
for i in data:
expected_result_average.append(expected_result_average[-1] * (1 - alpha) + i * alpha)
src = blocks.vector_source_f(data, False)
regen = blocks.peak_detector2_fb(2.0, 2, alpha)
dst = blocks.vector_sink_b()
avg = blocks.vector_sink_f()
tb.connect(src, regen)
tb.connect((regen, 0), dst)
tb.connect((regen, 1), avg)
tb.run()
dst_data = dst.data()
dst_avg = avg.data()
self.assertEqual(tuple(expected_result_peak), dst_data)
self.assertFloatTuplesAlmostEqual(tuple(expected_result_average[1:]), dst_avg)
if __name__ == '__main__':
gr_unittest.run(test_peak_detector2)
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