diff options
Diffstat (limited to 'gr-fft/python/fft/qa_goertzel.py')
| -rw-r--r--[-rwxr-xr-x] | gr-fft/python/fft/qa_goertzel.py | 40 |
1 files changed, 21 insertions, 19 deletions
diff --git a/gr-fft/python/fft/qa_goertzel.py b/gr-fft/python/fft/qa_goertzel.py index c2c5c565e7..ebd272cb22 100755..100644 --- a/gr-fft/python/fft/qa_goertzel.py +++ b/gr-fft/python/fft/qa_goertzel.py @@ -20,6 +20,8 @@ # Boston, MA 02110-1301, USA. # +from __future__ import division + from math import pi, cos from gnuradio import gr, gr_unittest, fft, blocks @@ -36,30 +38,30 @@ class test_goertzel(gr_unittest.TestCase): return [cos(2*pi*x*freq/rate) for x in range(rate)] def transform(self, src_data, rate, freq): - src = blocks.vector_source_f(src_data, False) + src = blocks.vector_source_f(src_data, False) dft = fft.goertzel_fc(rate, rate, freq) - dst = blocks.vector_sink_c() - self.tb.connect(src, dft, dst) - self.tb.run() - return dst.data() + dst = blocks.vector_sink_c() + self.tb.connect(src, dft, dst) + self.tb.run() + return dst.data() def test_001(self): # Measure single tone magnitude - rate = 8000 - freq = 100 - bin = freq - src_data = self.make_tone_data(rate, freq) - expected_result = 0.5 - actual_result = abs(self.transform(src_data, rate, bin)[0]) - self.assertAlmostEqual(expected_result, actual_result, places=4) + rate = 8000 + freq = 100 + bin = freq + src_data = self.make_tone_data(rate, freq) + expected_result = 0.5 + actual_result = abs(self.transform(src_data, rate, bin)[0]) + self.assertAlmostEqual(expected_result, actual_result, places=4) def test_002(self): # Measure off frequency magnitude - rate = 8000 - freq = 100 - bin = freq/2 - src_data = self.make_tone_data(rate, freq) - expected_result = 0.0 - actual_result = abs(self.transform(src_data, rate, bin)[0]) - self.assertAlmostEqual(expected_result, actual_result, places=4) + rate = 8000 + freq = 100 + bin = freq / 2 + src_data = self.make_tone_data(rate, freq) + expected_result = 0.0 + actual_result = abs(self.transform(src_data, rate, bin)[0]) + self.assertAlmostEqual(expected_result, actual_result, places=4) if __name__ == '__main__': gr_unittest.run(test_goertzel, "test_goertzel.xml") |