def test_pad_sound_with_silence(self):
sound = SoundBuffer('tests/sounds/guitar1s.wav')
# Pad start
original_length = len(sound)
silence_length = random.randint(100, 44100)
sound.pad(silence_length)
self.assertEqual(len(sound), silence_length + original_length)
self.assertEqual(sound[0], (0,0))
# Pad end
original_length = len(sound)
silence_length = random.randint(100, 44100)
sound.pad(end=silence_length)
self.assertEqual(len(sound), silence_length + original_length)
self.assertEqual(sound[-1], (0,0))
def test_pad_sound_with_silence(self):
sound = SoundBuffer(filename='tests/sounds/guitar1s.wav')
# Pad start
original_length = len(sound)
silence_length = random.triangular(0.001, 1)
sound = sound.pad(silence_length)
self.assertEqual(len(sound), int((sound.samplerate * silence_length) + original_length))
self.assertEqual(sound[0], (0,0))
# Pad end
original_length = len(sound)
silence_length = random.triangular(0.001, 1)
sound = sound.pad(end=silence_length)
self.assertEqual(len(sound), int((sound.samplerate * silence_length) + original_length))
self.assertEqual(sound[-1], (0,0))
def test_trim_silence(self):
sound = SoundBuffer(
filename='tests/sounds/guitar1s.wav').env('hannout')
firstval = abs(sum(sound[0]))
lastval = abs(sum(sound[-1]))
sound = sound.pad(start=1, end=1)
self.assertEqual(sound.dur, 3)
sound.write('tests/renders/trim_silence_before.wav')
for threshold in (0, 0.01, 0.5):
trimstart = sound.trim(start=True, end=False, threshold=threshold)
trimstart.write('tests/renders/trim_silence_start%s.wav' %
threshold)
trimend = sound.trim(start=False, end=True, threshold=threshold)
trimend.write('tests/renders/trim_silence_end%s.wav' % threshold)