def test_graincloud_with_read_lfo(self):
sound = SoundBuffer(filename='tests/sounds/linux.wav')
cloud = grains.Cloud(sound, position=dsp.win('hann', 0, 1))
length = 30
framelength = int(length * sound.samplerate)
out = cloud.play(length)
self.assertEqual(len(out), framelength)
out.write('tests/renders/graincloud_with_read_lfo.wav')
def test_unmodulated_graincloud(self):
sound = SoundBuffer(filename='tests/sounds/guitar1s.wav')
cloud = grains.Cloud(sound)
length = random.triangular(1, 4)
framelength = int(length * sound.samplerate)
out = cloud.play(length)
self.assertEqual(len(out), framelength)
out.write('tests/renders/graincloud_unmodulated.wav')
def test_graincloud_with_speed_lfo(self):
sound = SoundBuffer(filename='tests/sounds/guitar1s.wav')
minspeed = random.triangular(0.05, 1)
maxspeed = minspeed + random.triangular(0.5, 10)
speed = dsp.wt('rnd', minspeed, maxspeed)
cloud = grains.Cloud(sound, grainlength=0.04, speed=speed)
length = 30
framelength = int(length * sound.samplerate)
out = cloud.play(length)
self.assertEqual(len(out), framelength)
out.write('tests/renders/graincloud_with_speed_lfo.wav')
def makecloud():
snd = dsp.read('%s/sounds/linus.wav' % PATH)
grainlength = wavetables.randline(random.randint(50, 500),
lowvalue=0.001,
highvalue=random.triangular(0.02, 0.1))
grid = grainlength * 0.5
speed = wavetables.randline(random.randint(10, 100),
lowvalue=0.25,
highvalue=random.triangular(0.25, 10))
amp = wavetables.randline(random.randint(10, 500),
lowvalue=0.125,
highvalue=random.triangular(0.5, 1))
return grains.Cloud(
snd,
window=dsp.HANN,
position=dsp.PHASOR,
speed=speed,
grid=grid,
amp=amp,
grainlength=grainlength,
spread=random.random(),
jitter=random.triangular(0, 0.1),
).play(30)
