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from xml.etree import ElementTree as ET
import optparse, random, math, sys
def store_tup(opt, optstr, val, parser, nm, idx, filt=float):
tup = getattr(parser.values, nm)
setattr(parser.values, nm, tup[:idx] + (filt(val),) + tup[(idx+1):])
fund = 440.0
def to_freq(p):
return fund * 2.0**((p - 69) / 12.0)
def to_pitch(f):
try:
return 12 * math.log(f / fund, 2) + 69
except ValueError:
print 'bad frequency', f
raise
def store_target(opt, optstr, val, parser):
print 'opt', opt, 'optstr', optstr, 'val', val, 'parser', parser
if val.startswith('@'):
val = int(val[1:])
else:
val = int(to_freq(float(val)))
parser.values.targets.append((
parser.values.voices,
val,
parser.values.fadeint,
parser.values.inita,
parser.values.randt,
parser.values.randf,
parser.values.fstep,
parser.values.fina,
parser.values.sweept,
parser.values.fadeoutt
))
parser = optparse.OptionParser()
parser.add_option('-v', '--verbose', dest='verbose', action='store_true', help='Be verbose')
parser.add_option('-V', '--voices', dest='voices', type='int', help='Subsequent -t will have this many voices directed toward it')
parser.add_option('--fadeinlow', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('fadeint', 0), help='Low fade-in time for subsequent -t')
parser.add_option('--fadeinhigh', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('fadeint', 1), help='High fade-in time for subsequent -t')
parser.add_option('--initalow', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('inita', 0), help='Low init amplitude time for subsequent -t')
parser.add_option('--initahigh', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('inita', 1), help='High init amplitude time for subsequent -t')
parser.add_option('--randtlow', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('randt', 0), help='Low random time for subsequent -t')
parser.add_option('--randthigh', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('randf', 1), help='High random time for subsequent -t')
parser.add_option('--randflow', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('randf', 0), help='Low random freq for subsequent -t')
parser.add_option('--randfhigh', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('randt', 1), help='High random freq for subsequent -t')
parser.add_option('--fstep', dest='fstep', type='float', help='Frequency to wander by in random phase')
parser.add_option('--finalow', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('fina', 0), help='Low init amplitude time for subsequent -t')
parser.add_option('--finahigh', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('fina', 1), help='High init amplitude time for subsequent -t')
parser.add_option('--sweeplow', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('sweept', 0), help='Low sweep time for subsequent -t')
parser.add_option('--sweephigh', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('sweept', 1), help='High sweep time for subsequent -t')
parser.add_option('--fadeoutlow', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('fadeoutt', 0), help='Low fade-out time for subsequent -t')
parser.add_option('--fadeouthigh', action='callback', nargs=1, type='float', callback=store_tup, callback_args=('fadeoutt', 1), help='High fade-out time for subsequent -t')
parser.add_option('-t', '--target', action='callback', type='str', callback=store_target, nargs=1, help='Have some voices target this MIDI pitch or @frequency')
parser.add_option('-C', '--clear-targets', action='store_const', const=[], dest='targets', help='Clear all targets (including built in ones) prior')
parser.add_option('-r', '--resolution', dest='resolution', type='float', help='Period of generated samples')
parser.add_option('-c', '--chorus', dest='chorus', type='float', help='Random variation of frequency (factor)')
parser.add_option('--smooth', dest='smooth', type='int', help='Number of random uniform samples to perform to smooth')
parser.add_option('-D', '--duration', dest='duration', type='float', help='Length of the note')
parser.add_option('--slack', dest='slack', type='float', help='Slack added to duration to overcommit clients')
parser.add_option('--fundamental', dest='fundamental', type='float', help='Frequency of the A above middle C (traditionally 440 Hz)')
fadeint = (4.0, 6.0)
inita = (0.1, 0.2)
randt = (8.5, 9.0)
fina = (0.95, 1.0)
sweept = (17.5, 19.0)
fadeoutt = (1.5, 3.5)
randf = (200, 400)
fstep = 5
parser.set_defaults(
resolution = 0.05,
chorus = 0.02,
smooth = 5,
duration = 30.0,
slack = 0.02,
fundamental = 430.0,
voices = 1,
fadeint = fadeint,
inita = inita,
randt = randt,
fina = fina,
sweept = sweept,
fadeoutt = fadeoutt,
randf = randf,
fstep = fstep,
targets = [
(2, to_freq(26), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
(2, to_freq(38), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
(3, to_freq(45), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
(3, to_freq(50), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
(3, to_freq(57), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
(3, to_freq(62), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
(3, to_freq(69), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
(3, to_freq(74), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
(3, to_freq(81), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
(3, to_freq(86), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
(3, to_freq(90), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt), # Moorer claims this is here, but I'm not sure I believe him
# Below this is the "shit note"
#(2, to_freq(34), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(2, to_freq(35), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(2, to_freq(36), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(2, to_freq(42), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(47), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(48), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(54), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(59), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(60), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(66), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(72), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(77), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(83), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(84), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(85), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
#(3, to_freq(90), fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt),
],
)
options, args = parser.parse_args()
fund = options.fundamental
smooth_rand_buf = [random.random() for i in range(options.smooth)]
def smooth_rand():
global smooth_rand_buf
rv = sum(smooth_rand_buf) / options.smooth
smooth_rand_buf = [random.random()] + smooth_rand_buf[:-1]
return rv
def smooth_uniform(a, b):
return a + (b-a) * smooth_rand()
def clamp(u, l, h):
return min((h, max((l, u))))
iv = ET.Element('iv')
ivmeta = ET.SubElement(iv, 'meta')
ivstreams = ET.SubElement(iv, 'streams')
for nvoice, freq, fadeint, inita, randt, randf, fstep, fina, sweept, fadeoutt in options.targets:
for vn in range(nvoice):
ivstream = ET.SubElement(ivstreams, 'stream', type='ns')
vfadeint = random.uniform(*fadeint)
vinita = random.uniform(*inita)
vrandt = random.uniform(*randt)
vfina = random.uniform(*fina)
vsweept = random.uniform(*sweept)
vfadeoutt = random.uniform(*fadeoutt)
lastf = smooth_uniform(*randf)
if options.verbose:
print '-- setup:', freq, vn, 'fadeint', vfadeint, 'inita', vinita, 'randt', vrandt, 'fina', vfina, 'sweept', vsweept, 'fadeoutt', vfadeoutt, 'lastf', lastf
cntr = 0
for ts in range(int(options.duration / options.resolution)):
tm = ts * options.resolution
if tm < vfadeint:
a = vinita * (tm / vfadeint)
ap = 'fadein'
elif tm < vrandt:
a = vinita
ap = 'inita'
elif tm < vsweept:
u = (clamp((tm - vfadeint - vrandt) / (vsweept - vfadeint - vrandt), 0.0, 1.0)) ** 2
a = u * vfina + (1 - u) * vinita
ap = 'sweep'
else:
a = vfina
ap = 'fina'
if tm > options.duration - vfadeoutt:
a = vfina * max((((options.duration - tm) / vfadeoutt), 0))
ap = 'fadeout'
if tm < vfadeint + vrandt:
lastf = clamp(lastf + smooth_uniform(-fstep, fstep), randf[0], randf[1])
f = lastf
fp = 'rand'
elif tm < vsweept:
u = clamp((tm - vfadeint - vrandt) / (vsweept - vfadeint - vrandt), 0.0, 1.0)
f = u * freq + (1 - u) * lastf
fp = 'sweep'
else:
f = freq * (1.0 + smooth_uniform(-options.chorus, options.chorus))
fp = 'finf'
if options.verbose:
print freq, vn, tm, fp, f, ap, a
ivnote = ET.SubElement(ivstream, 'note',
id = str(cntr),
pitch = str(to_pitch(f)),
ampl = str(a),
time = str(tm),
dur = str(options.resolution + options.slack),
)
cntr += 1
if cntr > 0:
ivnote.set('par', '0')
sys.stdout.write(ET.tostring(iv, 'UTF-8'))
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