def create_phrase():
p = Pat2Midi()
n = Note2Midi()
# vary the lag to create the rubato feeling
lag_inc = NumberAnimation(frm=0, to=0.3, tween=['easeOutQuad'])
lag_dec = NumberAnimation(frm=0.3, to=0, tween=['easeInOutCubic'])
lag = SequentialAnimation([lag_inc, lag_dec], [1, 3], 2)
# vary the volume over time to keep it interesting
vol_inc1 = NumberAnimation(frm=Dyn.f, to=Dyn.ff, tween=['linear'])
vol_dec1 = NumberAnimation(frm=Dyn.ff, to=Dyn.mf, tween=['linear'])
vol_inc2 = NumberAnimation(frm=Dyn.mf, to=Dyn.f, tween=['linear'])
vol_dec2 = NumberAnimation(frm=Dyn.f, to=Dyn.mp, tween=['linear'])
vol_inc3 = NumberAnimation(frm=Dyn.mp, to=Dyn.mf, tween=['linear'])
vol_dec3 = NumberAnimation(frm=Dyn.mf, to=Dyn.pp, tween=['linear'])
vol = SequentialAnimation([vol_inc1, vol_dec1, vol_inc2, vol_dec2, vol_inc3, vol_dec3])
# and why not bounce a bit between legato and staccato while we're having fun?
legato_to_staccato = NumberAnimation(frm=1, to=0.25, tween=['easeOutBounce'])
staccato_to_legato = NumberAnimation(frm=0.1, to=1, tween=['easeOutBounce'])
dur = SequentialAnimation([legato_to_staccato, staccato_to_legato])
# animate the tempo
tempo_slowdown = NumberAnimation(frm=120, to=80, tween=['easeOutQuad'])
# play some random cadenza
notes = n.convert2(
"a5 b5 c6 a5 e5 d5 c5 d5 e5 c5 a4 g#4 a4 b4 c5 a4 e4 d4 c4 d4 e4 c4 a3 g#3 a3 b3 c4 d4 e4 g#4 a4".split(" "))
notes2 = n.convert2(
"d4 e4 f4 d4 a3 g3 f3 g3 a3 b3 c4 d4 c4 d4 e4 c4 g3 f3 e3 f3 g3 a3 b3 c4 a3 b3 c4 d4 e4 g#4 a4".split(" "))
notes.extend(notes2)
properties_plain = {
PP.NOTE: Pseq(notes, 1),
PP.VOL: Pconst(100),
PP.PLAYEDDUR: Pconst(0.95),
PP.DUR: Pseq([Pconst(Dur.sixteenth_triplet, len(notes2) - 1), Pconst(Dur.half, 1)], 2),
PP.LAG: Pconst(0),
PP.TEMPO: Pconst(120)
}
properties_rubato = {
PP.NOTE: Pseq(notes, 1),
PP.VOL: Ptween(vol, 0, 0, len(notes), len(notes), None),
PP.PLAYEDDUR: Ptween(dur, 0, 0, len(notes), len(notes), None),
PP.DUR: Pseq([Pconst(Dur.sixteenth_triplet, len(notes2) - 1), Pconst(Dur.half, 1)], 2),
PP.LAG: Ptween(lag, 0, 0, len(notes), len(notes), None),
PP.TEMPO: Ptween(tempo_slowdown, 0, 0, len(notes), len(notes), None)
}
ph = Phrase(properties_plain)
ph2 = Phrase(properties_rubato)
p.add_phrases([ph, ph2], 0, 0, 0)
p.write(outputfile)
def create_phrase():
n = Note2Midi()
notes = ["c4", "e4", "g4", "c5", "b4", "g4", "f4", "d4", "c4"]
from vectortween.NumberAnimation import NumberAnimation
from vectortween.SequentialAnimation import SequentialAnimation
increase = NumberAnimation(frm=Dyn.mp, to=Dyn.f)
decrease = NumberAnimation(frm=Dyn.f, to=Dyn.ppp)
swell_dim = SequentialAnimation([increase, decrease])
increasing_staccato = NumberAnimation(frm=1, to=0.5)
properties1 = {
# convert from note names to midi numbers
PP.NOTE:
Pseq(n.convert2(notes)),
# last note is longer than the rest
PP.DUR:
Pseq([Pconst(Dur.eighth,
len(notes) - 1),
Pconst(Dur.whole, 1)]),
# animate staccato
PP.PLAYEDDUR:
Ptween(increasing_staccato, 0, 0, len(notes), len(notes)),
# volume should linearly go up from mp to f, then go down from f to ppp as the phrase progresses
PP.VOL:
Ptween(swell_dim, 0, 0, len(notes), len(notes), None),
}
properties2 = {
# convert from (reversed) note names to midi numbers
PP.NOTE:
Pseq(n.convert2(notes[::-1])),
# last note is longer than the rest
PP.DUR:
Pseq([Pconst(Dur.eighth,
len(notes) - 1),
Pconst(Dur.whole, 1)]),
# animate staccato
PP.PLAYEDDUR:
Ptween(increasing_staccato, 0, 0, len(notes), len(notes)),
# volume should linearly go up from mp to f, then go down from f to ppp as the phrase progresses
PP.VOL:
Ptween(swell_dim, 0, 0, len(notes), len(notes), None),
}
p1 = Phrase(properties1)
p2 = Phrase(properties2)
p2m = Pat2Midi()
p2m.set_tempo(120)
total_dur = p2m.add_phrases([p1, p2], start_time=1)
print(total_dur)
p2m.write(outputfile)
def create_phrase():
n = Note2Midi()
a = NumberAnimation(frm=0, to=8000, tween=['easeOutElastic', 1, 0.02])
b = NumberAnimation(frm=8000, to=0, tween=['easeOutElastic', 1, 0.02])
c = NumberAnimation(frm=0, to=-8000, tween=['easeOutBounce', 0.1, 0.02])
d = NumberAnimation(frm=-8000, to=0, tween=['easeOutBounce', 0.1, 0.02])
s = SequentialAnimation([a, b, c, d], repeats=10)
properties = {
PP.NOTE:
n.convert2(Pconst("a4", 1)),
PP.DUR:
Pconst(Dur.whole * 16, 1), # single note for 16 beats
PP.PLAYEDDUR:
Pconst(1),
PP.ctrl_dur_key(MCC.PitchWheel):
Pconst(0.03125, int((1 / 0.03125) * Dur.whole * 16)),
PP.ctrl_val_key(MCC.PitchWheel):
Ptween(s, 0, 0,
int((1 / 0.03125) * Dur.whole * 16) - 1,
int((1 / 0.03125) * Dur.whole * 16) - 1, None)
}
p = Phrase(properties)
p2m = Pat2Midi()
p2m.add_phrase(p, track=0, channel=0, start_time=0)
p2m.write(outputfile)
def test_cc(self):
properties = {
PP.NOTE:
Pconst(67, 5),
PP.DUR:
Pconst(1 / 2, 5),
"D35":
Pconst(1 / 4, 10),
"V35":
Pseq([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], 10),
"D34":
Pconst(1 / 8, 20),
"V34":
Pseq([
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
19, 20
], 20)
}
p = Phrase(properties)
result = []
for event in p:
result.append(event)
self.assertEqual(len(result), 5 + 10 + 20)
self.assertEqual(result[-2]["V35"], 9)
self.assertEqual(result[-2]["D35"], 4 * 1 / 4)
self.assertEqual(result[-12]["V34"], 19)
self.assertEqual(result[-12]["D34"], 4 * 1 / 8)
def phrase_for_section(self, section_id):
"""
:param section_id: integer
:return: expremigen Phrase for section
"""
return Phrase(self.phrase_properties_for_section(section_id))
def test_defaults(self):
n = Note2Midi()
p = Phrase()
result = []
for event in p:
result.append(event)
self.assertEqual(len(result), 1)
self.assertEqual(result[0][PP.NOTE], n.lookup(Defaults.note))
self.assertEqual(result[0][PP.VOL], Defaults.vol)
self.assertEqual(result[0][PP.DUR], 4 * Defaults.dur)
self.assertEqual(result[0][PP.PLAYEDDUR], Defaults.playeddur)
self.assertEqual(result[0][PP.LAG], Defaults.lag)
self.assertEqual(result[0][PP.TEMPO], Defaults.tempo)
def __call__(self,
kind=None,
nanonotation=None,
volumes=None,
last_note_is_final=False):
notes = self.nano.notes(nanonotation)
durations = self.nano.dur(nanonotation)
return Phrase({
PP.NOTE: self.note(notes),
PP.VOL: self.volume(notes, volumes, None, None),
PP.PLAYEDDUR: self.playeddur(notes, kind),
PP.DUR: self.dur(durations),
PP.LAG: self.lag(notes, last_note_is_final)
})
def add_chords(pat2mid, track, channel):
n = Note2Midi()
notes = [C(["c3", "e3", "g3"]), C(["b2", "d3", "g3"]), C(["c3", "e3", "g3", "c4"])]
from vectortween.NumberAnimation import NumberAnimation
decrease = NumberAnimation(frm=Dyn.f, to=Dyn.p)
properties = {
PP.NOTE: Pseq(n.convert2(notes)),
PP.DUR: Pseq([Pconst(Dur.whole, 2), Pconst(Dur.doublewhole, 1)]),
PP.PLAYEDDUR: Pconst(1),
PP.VOL: Ptween(decrease, 0, 0, len(notes), len(notes), None)
}
p = Phrase(properties)
pat2mid.add_phrase(p, track=track, channel=channel, start_time=0)
return pat2mid
def test_phrase(self):
n = Note2Midi()
properties = {
PP.NOTE: Pseries(n.lookup("c4"), 1, 12),
PP.VOL: Pconst(100, sys.maxsize),
PP.DUR: Pconst(1 / 16, sys.maxsize),
PP.PLAYEDDUR: Pconst(0.9, sys.maxsize),
PP.LAG: Pconst(0, sys.maxsize)
}
p = Phrase(properties)
result = []
for event in p:
result.append(event)
self.assertEqual(len(result), 12)
self.assertEqual(result[1][PP.NOTE], n.lookup("c#4"))
self.assertEqual(result[5][PP.VOL], 100)
self.assertEqual(result[9][PP.DUR], 4 * 0.0625)
def test_addPhrase(self):
n = Note2Midi()
properties = {
PP.NOTE: Pconst(n.lookup("f#3"), 3),
PP.VOL: Pconst(Dyn.mf),
PP.DUR: Pconst(Dur.quarter),
PP.PLAYEDDUR: Pconst(0.9),
PP.LAG: Pconst(0)
}
p = Phrase(properties)
p2m = Pat2Midi()
duration = p2m.add_phrase(p)
self.assertEqual(duration, 3 * 4 * Dur.quarter)
duration2 = p2m.add_phrase(p, start_time=duration)
# just adding a single phrase returns the duration of that phrase only
self.assertEqual(duration, duration2)
# adding a list of phrases returns the total duration
total_duration = p2m.add_phrases([p], start_time=duration + duration2)
self.assertEqual(total_duration, 3 * duration)
def test_phrase2(self):
n = Note2Midi()
notes = ["c4", "e4", "g4", "c5", "b4", "g4", "f4", "d4", "c4"]
from vectortween.NumberAnimation import NumberAnimation
from vectortween.SequentialAnimation import SequentialAnimation
increase = NumberAnimation(frm=Dyn.mp, to=Dyn.f)
decrease = NumberAnimation(frm=Dyn.f, to=Dyn.ppp)
swell_dim = SequentialAnimation([increase, decrease])
increasing_staccato = NumberAnimation(frm=1, to=0.8)
properties = {
# convert from note names to midi numbers
PP.NOTE:
Pseq(n.convert2(notes)),
# last note is longer than the rest
PP.DUR:
Pseq([Pconst(Dur.quarter,
len(notes) - 1),
Pconst(Dur.whole, 1)]),
# animate staccato
PP.PLAYEDDUR:
Ptween(increasing_staccato, 0, 0, len(notes), len(notes)),
# volume should linearly go up from mp to f, then go down from f to ppp as the phrase progresses
PP.VOL:
Ptween(swell_dim, 0, 0, len(notes), len(notes), None),
}
p = Phrase(properties)
result = []
for event in p:
result.append(event)
self.assertEqual(len(result), 9)
# check that last note longer
self.assertEqual(result[7][PP.DUR], 4 * 1 / 4)
self.assertEqual(result[8][PP.DUR], 4 * 1)
# check that volume increases then decreases
self.assertLess(result[0][PP.VOL], result[4][PP.VOL])
self.assertLess(result[8][PP.VOL], result[4][PP.VOL])
self.assertLess(result[8][PP.VOL], result[0][PP.VOL])
# check that staccato increases
for i in range(8):
self.assertTrue(
result[i][PP.PLAYEDDUR] > result[i + 1][PP.PLAYEDDUR])
self.assertEqual(result[8][PP.NOTE], n.lookup("c4"))
def add_melody(pat2mid, track, channel):
n = Note2Midi()
notes = ["c4", "e4", "g4", "c5", "b4", "g4", "f4", "d4", "c4"]
from vectortween.NumberAnimation import NumberAnimation
from vectortween.SequentialAnimation import SequentialAnimation
increase = NumberAnimation(frm=Dyn.mp, to=Dyn.f)
decrease = NumberAnimation(frm=Dyn.f, to=Dyn.ppp)
swell_dim = SequentialAnimation([increase, decrease])
increasing_staccato = NumberAnimation(frm=1, to=0.5)
properties = {
# convert from note names to midi numbers
PP.NOTE: Pseq(n.convert2(notes)),
# last note is longer than the rest
PP.DUR: Pseq([Pconst(Dur.quarter, len(notes) - 1), Pconst(Dur.whole, 1)]),
# animate staccato
PP.PLAYEDDUR: Ptween(increasing_staccato, 0, 0, len(notes), len(notes)),
# volume should linearly go up from mp to f, then go down from f to ppp as the phrase progresses
PP.VOL: Ptween(swell_dim, 0, 0, len(notes), len(notes), None),
}
p = Phrase(properties)
pat2mid.set_tempo(60)
pat2mid.add_phrase(p, track=track, channel=channel, start_time=0)
return pat2mid
def add_phrase(self, phrase: Phrase, track=0, channel=0, start_time=0):
"""
:param phrase: a Phrase containing patterns and animations
:param track: default: 0
:param channel: default: 0
:param start_time: time at which the phrase should be inserted default: 0
:return: total duration of the inserted phrase
"""
for event in phrase:
# set tempo events only if they changed since last time
# handle note events
if PP.NOTE in event:
if event[PP.TEMPO] != self.last_set_tempo[track]:
self.midiFile.addTempo(
track, start_time + phrase.generated_duration(),
event[PP.TEMPO])
self.last_set_tempo[track] = event[PP.TEMPO]
# set notes always
if isinstance(event[PP.NOTE], Pchord):
for n in event[PP.NOTE].notes:
try:
intnote = int(n)
except ValueError:
intnote = self.note2midi.lookup(n)
if intnote == REST:
continue
self.midiFile.addNote(
track=track,
channel=channel,
pitch=intnote,
time=start_time + phrase.generated_duration() +
event[PP.LAG],
duration=event[PP.DUR] * event[PP.PLAYEDDUR],
volume=int(event[PP.VOL]),
annotation=None)
else:
try:
intnote = int(event[PP.NOTE])
except ValueError:
intnote = self.note2midi.lookup(event[PP.NOTE])
if intnote == REST:
continue
self.midiFile.addNote(
track=track,
channel=channel,
pitch=intnote,
time=start_time + phrase.generated_duration() +
event[PP.LAG],
duration=event[PP.DUR] * event[PP.PLAYEDDUR],
volume=int(event[PP.VOL]),
annotation=None)
self.handle_control_changes(channel, event, phrase, start_time,
track)
# handle controller events (only if they changed since last time)
else:
self.handle_control_changes(channel, event, phrase, start_time,
track)
return phrase.generated_duration()