def roll(snd, length=None, numlayers=2, minlen=10, maxlen=80, env=True, bend=True):
layers = []
for _ in range(numlayers):
if length is None:
numbeats = dsp.randint(20, 50)
else:
numbeats = length / dsp.mstf(minlen)
lengths = dsp.breakpoint([ dsp.rand(minlen, maxlen) for _ in range(dsp.randint(5, numbeats/2)) ], numbeats)
layer = ''
for l in lengths:
layer += dsp.fill(snd, dsp.mstf(l), silence=True)
if bend:
layer = fx.bend(layer, [ dsp.rand(0, 1) for _ in range(dsp.randint(5, 20)) ], dsp.rand(0.02, 1))
if env:
layer = fx.penv(layer)
layers += [ layer ]
out = dsp.mix(layers)
out = dsp.fill(out, length)
return out
def brass(length=22050, freq=220, amp=0.5):
pw = dsp.rand(0.25, 0.5)
note = pulsar(length=length, freq=freq, pulsewidth=pw, amp=amp)
noise = dsp.bln(length, dsp.rand(1000, 2000), dsp.rand(2000, 3000))
noise = dsp.fill(noise, length)
noise = fx.bend(noise, [ dsp.rand() for _ in range(dsp.randint(5, 10)) ], dsp.rand(0.01, 0.3))
noise = dsp.amp(noise, dsp.rand(0.001, 0.002))
noise = dsp.env(noise, 'tri')
note = dsp.mix([ note, noise ])
return note
