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jbutler.py
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jbutler.py
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from pippi import dsp
from pippi import tune
import math
dsp.quiet = False
dsp.timer('start')
dsp.seed('jbutler')
cathedral = dsp.read('sounds/cathedral.wav')
tone = dsp.read('sounds/ding.wav').data
def fade(snd, time=dsp.mstf(1)):
first = dsp.cut(snd, 0, time)
middle = dsp.cut(snd, time, dsp.flen(snd) - (time * 2))
last = dsp.cut(snd, dsp.flen(middle) + time, time)
snd = dsp.env(first, 'line') + middle + dsp.env(last, 'phasor')
return snd
def ding(tone, tlength=88200, nlength=1000):
def sequence(tonic='g'):
numdegrees = dsp.randint(2, 8)
degrees = [1,5,8,11,12]
#scale = [ dsp.randchoose(degrees) for i in range(numdegrees) ]
scale = degrees[dsp.randint(0, 3):]
scale = dsp.randshuffle(scale)
scale = tune.fromdegrees(scale, 1, tonic, tune.major, tune.terry)
return scale
numtones = tlength / nlength
numtones = 1 if numtones < 1 else numtones
freqs = [ note / tune.ntf('g', 4) for note in sequence('g') ]
tones = [ dsp.transpose(tone, freq) for freq in freqs ]
#tones = [ dsp.cut(tones[i % len(tones)], dsp.mstf(dsp.rand(0, 100)), nlength + dsp.randint(0, 500)) for i in range(numtones) ]
tones = [ dsp.cut(tones[i % len(tones)], dsp.mstf(dsp.rand(0, 100)), nlength) for i in range(numtones) ]
#tones = [ dsp.drift(tone, 0.03) for tone in tones ]
curve = dsp.breakpoint([0] + [ dsp.rand(0, 0.01) for i in range(3) ], len(tones))
tones = [ dsp.drift(tone, curve[index % len(curve)]) for index, tone in enumerate(tones) ]
tones = [ fade(tone) for tone in tones ]
return dsp.amp(''.join(tones), 0.5)
def slurp(snd):
snd = dsp.split(snd, dsp.flen(snd) / 100)
numcycles = len(snd)
curve_a = dsp.breakpoint([1.0] + [dsp.rand(0.1, 1.0) for r in range(dsp.randint(2, 10))] + [0], numcycles)
curve_b = dsp.wavetable('cos', numcycles)
wtable = [ curve_a[i] * curve_b[i] for i in range(numcycles) ]
wtable = [ math.fabs((f * 5) + 0.75) for f in wtable ]
snd = [ dsp.transpose(snd[i], wtable[i]) for i in range(numcycles) ]
return ''.join(snd)
def fracture(snd):
numpoints = dsp.randint(3, 20)
poscurve = dsp.breakpoint([0] + [dsp.rand() for i in range(4)] + [0], numpoints)
poscurve = [ p * (dsp.flen(snd) - dsp.mstf(210)) for p in poscurve ]
lencurve = dsp.breakpoint([0] + [dsp.rand() for i in range(4)] + [0], numpoints)
lencurve = [ l * dsp.mstf(200) + dsp.mstf(10) for l in lencurve ]
pancurve = dsp.breakpoint([0] + [dsp.rand() for i in range(4)] + [0], numpoints)
prepadcurve = dsp.breakpoint([0] + [dsp.rand() for i in range(4)] + [0], numpoints)
prepadcurve = [ int(p * dsp.mstf(20)) for p in prepadcurve ]
postpadcurve = dsp.breakpoint([0] + [dsp.rand() for i in range(4)] + [0], numpoints)
postpadcurve = [ int(p * dsp.mstf(20)) for p in postpadcurve ]
speeds = [1.0, 2.0, 0.5, 0.75]
grains = [ dsp.cut(snd, poscurve[i], lencurve[i]) for i in range(numpoints) ]
grains = [ dsp.pan(grains[i], pancurve[i]) for i in range(numpoints) ]
grains = [ dsp.env(grain, 'gauss', True) for grain in grains ]
grains = [ dsp.transpose(grain, dsp.randchoose(speeds)) for grain in grains ]
grains = [ dsp.pad(grains[i], prepadcurve[i], postpadcurve[i]) for i in range(numpoints) ]
for i in range(numpoints):
if dsp.randint(0, 3) == 0:
grains[i] = slurp(grains[i])
etypes = ['line', 'phasor', 'tri', 'sine', 'gauss']
snd = dsp.env(''.join(grains), dsp.randchoose(etypes))
snd = dsp.pad(snd, 0, dsp.mstf(dsp.rand(100, 400)))
return snd
def smear(snd):
snd = dsp.split(snd, dsp.mstf(dsp.rand(5000, 10000)))
snd = dsp.randshuffle(snd)
snd = [ dsp.env(s) for s in snd ]
snd = [ s * dsp.randint(1, 8) for s in snd ]
return dsp.drift(''.join(snd), dsp.rand(0.01, 0.1))
out = ''
sparks = dsp.mix([ ''.join([ fracture(cathedral.data) for i in range(20) ]) for i in range(3) ])
smears = dsp.mix([ smear(cathedral.data) for i in range(10) ])
tlen = dsp.stf(20)
dings = ''
for seg in range(20):
nlen = dsp.mstf(dsp.randint(4130, 6300))
dings += dsp.mix([ding(tone, tlen, nlen) for i in range(2)])
#out = dsp.mix([dsp.amp(dings, 0.8), smears, sparks])
out = sparks
dsp.write(out, 'sparks', False)
dsp.timer('stop')