def test_invert(self):
s_mono = Sine(100).to_audio_segment()
s = s_mono.set_channels(2)
try:
s_mono.invert_phase(channels=(1, 0))
except Exception:
pass
else:
raise Exception(
"AudioSegment.invert_phase() didn't catch a bad input (mono)")
s_inv = s.invert_phase()
self.assertFalse(s == s_inv)
self.assertTrue(s.rms == s_inv.rms)
self.assertTrue(s == s_inv.invert_phase())
s_inv_right = s.invert_phase(channels=(0, 1))
left, right = s_inv_right.split_to_mono()
self.assertFalse(s_mono == s_inv_right)
self.assertFalse(s_inv == s_inv_right)
self.assertTrue(left == s_mono)
self.assertFalse(right == s_mono)
s_inv_left = s.invert_phase(channels=(1, 0))
left, right = s_inv_left.split_to_mono()
self.assertFalse(s_mono == s_inv_left)
self.assertFalse(s_inv == s_inv_left)
self.assertFalse(left == s_mono)
self.assertTrue(right == s_mono)
def test_invert(self):
s_mono = Sine(100).to_audio_segment()
s = s_mono.set_channels(2)
try:
s_mono.invert_phase(channels=(1, 0))
except Exception:
pass
else:
raise Exception("AudioSegment.invert_phase() didn't catch a bad input (mono)")
s_inv = s.invert_phase()
self.assertFalse(s == s_inv)
self.assertTrue(s.rms == s_inv.rms)
self.assertTrue(s == s_inv.invert_phase())
s_inv_right = s.invert_phase(channels=(0, 1))
left, right = s_inv_right.split_to_mono()
self.assertFalse(s_mono == s_inv_right)
self.assertFalse(s_inv == s_inv_right)
self.assertTrue(left == s_mono)
self.assertFalse(right == s_mono)
s_inv_left = s.invert_phase(channels=(1, 0))
left, right = s_inv_left.split_to_mono()
self.assertFalse(s_mono == s_inv_left)
self.assertFalse(s_inv == s_inv_left)
self.assertFalse(left == s_mono)
self.assertTrue(right == s_mono)
