ref: 5a93302d1307e92c952871de693ca9dc98595b1a
dir: /interfaces/python/test_filter.py/
from numpy.testing import TestCase, run_module_suite
from numpy.testing import assert_equal, assert_almost_equal
from _aubio import *
from numpy import array
def array_from_text_file(filename, dtype = 'float'):
return array([line.split() for line in open(filename).readlines()],
dtype = dtype)
class aubio_filter_test_case(TestCase):
def test_members(self):
f = digital_filter()
assert_equal ([f.channels, f.order, f.samplerate], [1, 7, 44100])
f = digital_filter(48000, 5, 2)
assert_equal ([f.channels, f.order, f.samplerate], [2, 5, 48000])
f(fvec())
def test_cweighting_error(self):
f = digital_filter (44100, 2, 1)
self.assertRaises ( ValueError, f.set_c_weighting )
f = digital_filter (44100, 8, 1)
self.assertRaises ( ValueError, f.set_c_weighting )
f = digital_filter (4000, 5, 1)
self.assertRaises ( ValueError, f.set_c_weighting )
f = digital_filter (193000, 5, 1)
self.assertRaises ( ValueError, f.set_c_weighting )
f = digital_filter (193000, 7, 1)
self.assertRaises ( ValueError, f.set_a_weighting )
f = digital_filter (192000, 5, 1)
self.assertRaises ( ValueError, f.set_a_weighting )
def test_c_weighting(self):
expected = array_from_text_file('c_weighting_test_simple.expected')
f = digital_filter(44100, 5, 1)
f.set_c_weighting()
v = fvec(32)
v[0][12] = .5
u = f(v)
assert_almost_equal (expected[1], u)
def test_a_weighting(self):
expected = array_from_text_file('a_weighting_test_simple.expected')
f = digital_filter(44100, 7, 1)
f.set_a_weighting()
v = fvec(32)
v[0][12] = .5
u = f(v)
assert_almost_equal (expected[1], u)
def test_a_weighting_parted(self):
expected = array_from_text_file('a_weighting_test_simple.expected')
f = digital_filter(44100, 7, 1)
f.set_a_weighting()
v = fvec(16)
v[0][12] = .5
u = f(v)
assert_almost_equal (expected[1][:16], u)
# one more time
v = fvec(16)
u = f(v)
assert_almost_equal (expected[1][16:], u)
if __name__ == '__main__':
from unittest import main
main()