def test_substitute_reversed(self):
sound = SoundBuffer(filename='tests/sounds/linux.wav')
waveset = Waveset(sound)
rev = waveset.reversed()
out = waveset.replace(rev)
out = fx.norm(out, 1)
out.write('tests/renders/waveset_substitute_reversed.wav')
def test_create_tukey(self):
length = 10
shape = dsp.win(shapes.win('sine', length=3), 0, 0.5)
chord = tune.chord('i9', octave=2)
out = dsp.buffer(length=length)
for freq in chord:
freq = dsp.wt('sinc', freq, freq * 4)
l = Tukey(freq=freq, shape=shape).play(length)
l = l.pan(dsp.rand())
out.dub(l)
out = fx.norm(out, 0.8)
out.write('tests/renders/osc_tukey.wav')
def test_fft_process(self):
snd = dsp.read('tests/sounds/guitar1s.wav')
length = 2
def cb(pos, real, imag):
mag, arg = fft.to_polar(real, imag)
mag = fx.lpf(mag, pos * 5000 + 100)
return fft.to_xy(mag, arg)
bs = dsp.win(shapes.win('sine'), 0.05, 0.3)
out = fft.process(snd, bs, length, callback=cb)
out = fx.norm(out, 1)
out.write('tests/renders/fft_process.wav')
def test_playall(self):
events = []
pos = 0
length = 10
while pos < length:
events += [
dict(start=pos,
length=dsp.rand(0.2, 3),
freq=30 * dsp.randint(1, 10),
amp=dsp.rand(),
voice=dsp.randint(0, 127))
]
pos += dsp.rand(0.01, 0.1)
out = soundfont.playall("tests/sounds/florestan-gm.sf2", events)
out = fx.norm(out, 0.5)
out.write('tests/renders/soundfont_playall.wav')
def test_fft_transform(self):
snd = dsp.read('tests/sounds/guitar1s.wav')
snd2 = dsp.read('tests/sounds/LittleTikes-B1.wav').cut(0, 1)
mod = dsp.buffer(dsp.win('sine', wtsize=len(snd))).remix(1).remix(2)
# Transform
real1, imag1 = fft.transform(snd)
real2, imag2 = fft.transform(snd2)
# Do stuff
imag = real1 * real2
real = imag1 * imag2
mag, arg = fft.to_polar(real, imag)
#mag = fx.lpf(mag, 100)
real, imag = fft.to_xy(mag, arg)
# Inverse Transform
out = fft.itransform(real, imag)
out = fx.norm(out, 1)
out.write('tests/renders/fft_transform.wav')
def test_playall(self):
events = []
pos = 0
length = 3
freqs = tune.degrees(list(range(1, 13)))
while pos < length:
events += [
dsp.event(
onset=pos,
length=dsp.rand(0.1, 3),
freq=dsp.choice(freqs) * 2**dsp.randint(0, 3),
amp=dsp.rand(),
voice=dsp.randint(0, 127),
)
]
pos += 0.25
out = soundfont.playall("tests/sounds/florestan-gm.sf2", events)
out = fx.norm(out, 0.5)
out.write('tests/renders/soundfont_playall.wav')
def test_onsets(self):
snd = dsp.read('tests/sounds/rain.wav')
onsets = mir.onsets(snd, 'specflux')
self.assertEqual(len(onsets), 7)
onsets = mir.onsets(snd, 'specflux', seconds=False)
print(onsets)
self.assertEqual(len(onsets), 7)
segments = mir.segments(snd, 'specflux')
self.assertEqual(len(segments), 7)
out = dsp.buffer(length=7)
pos = 0
count = 1
for segment in segments:
segment = fx.norm(segment.env('pluckout').taper(0.05), 1)
segment.write('tests/renders/mir_segment%02d.wav' % count)
out.dub(segment, pos)
pos += 1
count += 1
out.write('tests/renders/mir_segments.wav')
def test_delay(self):
snd = dsp.read('tests/sounds/guitar10s.wav')
snd = fx.delay(snd, 1, 0.5)
snd = fx.norm(snd, 1)
snd.write('tests/renders/fx_delay.wav')
bars = dsp.win('sinc', 3, 40, 50)
total_length = sum(bars)
stems = {}
for stem, cb in ORC.items():
stems[stem] = dsp.buffer(length=total_length)
pos = 0
print('STEM', stem)
for i, l in enumerate(bars):
l = 3 if l <= 0 else l
bar = cb(l, pos, total_length)
stems[stem].dub(bar, pos)
pos += l
print(' %s normalize' % stem)
stems[stem] = fx.norm(stems[stem], 1)
print(' %s write' % stem)
stems[stem].write('stem-%s.wav' % stem)
print()
print('MIXING', total_length)
out = dsp.buffer(length=total_length)
for stem, layer in stems.items():
out.dub(layer)
print('COMPRESSING/WRITING', total_length)
out *= 10
out = fx.compressor(out, -10, 10)
out = fx.norm(out, 1)
out.write('amber-bars.wav')
def test_fold_osc(self):
out = Fold('sine', freq=200, amp=[1, 10]).play(1)
out = fx.norm(out, 1)
out.write('tests/renders/osc_fold.wav')
def test_mdelay(self):
snd = dsp.read('tests/sounds/guitar10s.wav')
ndelays = 20
snd = fx.mdelay(snd, [ random.triangular(0, 8) for _ in range(ndelays) ], 0.7)
snd = fx.norm(snd, 1)
snd.write('tests/renders/fx_mdelay.wav')
