def stream(length, numsegments, freq):
out = []
seglength = dsp.randint(100, 300)
points = [ dsp.rand(-1, 1) for _ in range(dsp.randint(10, 20)) ]
for _ in range(numsegments):
seglength = dsp.cap(seglength + dsp.randint(-5, 5), 1000, 100)
points = [ dsp.cap(p + dsp.randint(-0.1, 0.1), 1, -1) for p in points ]
out += dsp.breakpoint([0] + points + [0], seglength)
print len(out), freq, length
out = dsp.ctone(freq, dsp.stf(length), out, dsp.rand(0.1, 0.5))
#out = dsp.env(out, 'random')
return out
def rb(snd, length=None, speed=None, hz=None, interval=None, ratios=None, crisp=0, formant=False):
pid = os.getpid()
cmd = ['rubberband']
# Time stretching
if length is not None and dsp.flen(snd) != length and length > 0:
cmd += [ '--duration %s' % dsp.fts(length) ]
# crisp setting
cmd += [ '--crisp %s' % dsp.cap(crisp, 6, 0) ]
# preserve formants
if formant:
cmd += [ '--formant' ]
# pitch shift by speed
if speed is not None:
cmd += [ '--frequency %s' % speed ]
# pitch shift by semitones
if interval is not None:
# TODO use pippi.tune ratios and calc frequency args
cmd += [ '--pitch %s' % interval ]
vpid = pid + random.randint(1, 10000)
cmd = ' '.join(cmd) + ' /tmp/infile%s.wav /tmp/outfile%s.wav' % (vpid, vpid)
dsp.write(snd, '/tmp/infile%s' % vpid, cwd=False)
with open(os.devnull, 'w') as devnull:
p = subprocess.Popen(cmd, stdout=devnull, stderr=devnull, shell=True)
p.wait()
out = dsp.read('/tmp/outfile%s.wav' % vpid).data
os.remove('/tmp/outfile%s.wav' % vpid)
os.remove('/tmp/infile%s.wav' % vpid)
return out
