def test_graincloud_with_length_lfo(self):
sound = SoundBuffer(filename='tests/sounds/guitar1s.wav')
cloud = grains.GrainCloud(sound, grainlength_lfo=dsp.RND)
length = random.triangular(1, 4)
framelength = int(length * sound.samplerate)
out = cloud.play(length)
self.assertEqual(len(out), framelength)
if save:
out.write('test_graincloud_with_length_lfo.flac')
def makecloud(density):
return grains.GrainCloud(
snd * 0.125,
win=dsp.HANN,
read_lfo=dsp.PHASOR,
speed_lfo_wt=interpolation.linear(
[random.random() for _ in range(random.randint(10, 1000))], 4096),
density_lfo_wt=interpolation.linear(
[random.random() for _ in range(random.randint(10, 1000))], 4096),
grainlength_lfo_wt=interpolation.linear(
[random.random() for _ in range(random.randint(10, 500))], 4096),
minspeed=0.25,
maxspeed=random.triangular(0.25, 10),
density=density,
minlength=1,
maxlength=random.triangular(60, 100),
spread=random.random(),
jitter=random.triangular(0, 0.1),
).play(30)
def makecloud(snd):
return grains.GrainCloud(
snd,
win=dsp.HANN,
read_lfo=dsp.PHASOR,
speed_lfo_wt=interpolation.linear([
random.triangular(0, 0.05) for _ in range(random.randint(10, 1000))
], 4096),
density_lfo_wt=interpolation.linear(
[random.random() for _ in range(random.randint(10, 1000))], 4096),
grainlength_lfo_wt=interpolation.linear(
[random.random() for _ in range(random.randint(10, 500))], 4096),
minspeed=0.99,
maxspeed=random.triangular(1, 1.1),
density=random.triangular(0.75, 2),
minlength=1,
maxlength=random.triangular(60, 100),
spread=random.random(),
jitter=random.triangular(0, 0.1),
).play(snd.dur * random.triangular(3, 4))