def createIntToNoteMap(self):
for i in range(0, 128):
note = i % 12;
note_name = notes.int_to_note(note);
octave = (i / 12) - 1;
self.__midi_int_to_note_int_map[i] = i % 12;
self.__midi_int_to_note_map[i] = notes.int_to_note(i % 12);
self.__note_octave_to_midi_note_map[note_name + str(octave)] = i;
self.__midi_note_to_note_octave_map[i] = [note_name,octave];
def test_int_to_note(self):
known = {
(0, '#'): 'C',
(3, '#'): 'D#',
(8, '#'): 'G#',
(11, '#'): 'B',
(0, 'b'): 'C',
(3, 'b'): 'Eb',
(8, 'b'): 'Ab',
(11, 'b'): 'B'
}
for k in known.keys():
self.assertEqual(known[k], notes.int_to_note(k[0], k[1]),
'%s with "%s" not corrisponding to %s, expecting %s' % (
k[0], k[1], notes.int_to_note(k[0], k[1]), known[k]))
def __call__(self, event, date = None ):
event_types = (NOTE_ON, NOTE_OFF)
if (event[0][0] & 0xF0) in event_types:
if(event[0][1] < 60):
self.scale = mapper.getMap(event[0][1]);
self.midiout.send_message(event[0]);
else:
octave = event[0][1] / int(12);
note = event[0][1] % 12;
note_name = notes.int_to_note(note);
print notes.note_to_int(self.scale[note_name]);
event[0][1] = notes.note_to_int(self.scale[note_name]) + (12 * octave);
self.midiout.send_message(event[0]);
print notes.int_to_note(event[0][1] %12) + "(" + str(event[0][1]) +")" + " instead of " + notes.int_to_note(note) + "(" + str(note * octave) + ")";
def main():
file = open(FILENAME, 'r')
obj = json.load(file)
file.close()
roots = obj['roots']
operations = obj['chords']
id = 0
all_chords = []
for function in operations:
try:
method = getattr(chords, function)
name = operations[function]
for root in roots:
notes_in_chord = method(root)
fixed_notes = [notes.int_to_note(notes.note_to_int(elem)) for elem in notes_in_chord]
chord_name = root + ' ' + name
dict = {'notes' : fixed_notes, 'id' : id, 'name' : chord_name, 'type' : function, 'root' : root}
all_chords.append(dict)
id += 1
except AttributeError:
pass
outFile = open(OUT_FILE, 'w')
json.dump(all_chords, outFile)
outFile.close()
def voice(old_voiced, nxt_chord):
if old_voiced is None:
return chords.from_shorthand(nxt_chord)
old = [notes.note_to_int(n) for n in old_voiced]
new = {notes.note_to_int(n) for n in chords.from_shorthand(nxt_chord)}
res = []
for note in old:
if new:
closest = min(new, key=lambda n: abs(note - n))
res.append(closest)
new.remove(closest)
else:
if len(old) == 4:
res.append(res[0])
for n in new:
best_index = 0
min_dist = 12
for i in range(0, len(old)):
dist = abs(old[i] - n)
if dist < min_dist:
min_dist = dist
best_index = i
res.insert(i, n)
return [notes.int_to_note(n) for n in res]
def __init__(self, width, height):
PygameVisualization.__init__(self, width, height)
pygame.font.init()
f = pygame.font.SysFont("monospace", width / 30)
self.offsety = height % 24 / 2
self.offsetx = width % 16 / 2
self.radius = height / 24
self.chanw = width / 32
no = []
for n in range(12):
no.append(f.render(notes.int_to_note(n),
False, (169,169,169)))
for x in range(17):
if x % 2:
pygame.draw.rect(self.raster, (230,230,230),
(x * self.chanw * 2+ self.offsetx, 0,
self.chanw * 2, height))
for x in range(17):
pygame.draw.line(self.raster, (210,210,210),
(x * self.chanw * 2 + self.offsetx ,0),
(x * self.chanw * 2 + self.offsetx, height))
for y in range(13):
pygame.draw.line(self.raster, (200,200,200),
(self.offsetx, y * self.radius * 2 + self.offsety),
(width - self.offsetx , y * self.radius * 2 + self.offsety))
if y < 12:
self.raster.blit(no[y], (x * self.chanw * 2 + self.chanw / 2 + self.offsetx,
y * self.radius * 2 + self.radius))
def voice(old_voiced, nxt_chord):
if old_voiced is None:
return chords.from_shorthand(nxt_chord)
old = [notes.note_to_int(n) for n in old_voiced]
new = {notes.note_to_int(n) for n in chords.from_shorthand(nxt_chord)}
res = []
for note in old:
if new:
closest = min(new, key=lambda n: abs(note - n))
res.append(closest)
new.remove(closest)
else:
if len(old) == 4:
res.append(res[0])
for n in new:
best_index = 0
min_dist = 12
for i in range(0, len(old)):
dist = abs(old[i] - n)
if dist < min_dist:
min_dist = dist
best_index = i
res.insert(i, n)
return [notes.int_to_note(n) for n in res]
def make_progression(base_chord, major):
temp = notes.note_to_int(base_chord)
base_chord = notes.int_to_note(temp, 'b')
if (major):
return progressions.to_chords(['I', 'V', 'VIm', 'IV'], base_chord)
else:
return progressions.to_chords(['Im', 'Vm', 'VI', 'IVm'], base_chord)
def generate_note(self, state): if random() < state["wild"]: note = notes.int_to_note(randrange(0, 12)) octave = randrange(2, 7) return [Note(note, octave)] else: return None
def test_int_to_note(self):
known = {
(0, '#'): 'C',
(3, '#'): 'D#',
(8, '#'): 'G#',
(11, '#'): 'B',
(0, 'b'): 'C',
(3, 'b'): 'Eb',
(8, 'b'): 'Ab',
(11, 'b'): 'B'
}
for k in known.keys():
self.assertEqual(
known[k], notes.int_to_note(k[0], k[1]),
'%s with "%s" not corrisponding to %s, expecting %s' %
(k[0], k[1], notes.int_to_note(k[0], k[1]), known[k]))
def from_hertz(self, hertz, standard_pitch = 440):
"""Sets the Note name and pitch, calculated from the `hertz` value. \
The `standard_pitch` argument can be used to set the pitch of A-4, from \
which the rest is calculated."""
value = log(float(hertz) / standard_pitch, 2) * 12 + notes.note_to_int("A")
self.name = notes.int_to_note(int(value) % 12)
self.octave = int(value / 12) + 4
def test_int_to_note(self):
known = {
(0, "#"): "C",
(3, "#"): "D#",
(8, "#"): "G#",
(11, "#"): "B",
(0, "b"): "C",
(3, "b"): "Eb",
(8, "b"): "Ab",
(11, "b"): "B",
}
for k in known:
self.assertEqual(
known[k],
notes.int_to_note(k[0], k[1]),
'%s with "%s" not corrisponding to %s, expecting %s' %
(k[0], k[1], notes.int_to_note(k[0], k[1]), known[k]),
)
def process_scale_change(self, scale):
if len(scale) != 0 and len(self.current_note) != 0:
note_name = notes.int_to_note(self.current_note[0]);
scale_name = self.utils.getAvailableScales()[scale[0]];
self.scale_to_map = self.mapper.getScaleToMap(note_name, scale_name);
self.mapped_scale = self.cache.getScaleFromCache(note_name, scale_name);
self.show_scale_to_buttons();
self.auto_mode = False;
self.showMessage(note_name + " - " + scale_name);
def from_hertz(self, hertz, standard_pitch=440):
"""Sets the Note name and pitch, calculated from the `hertz` value. The \
`standard_pitch` argument can be used to set the pitch of A-4, from \
which the rest is calculated."""
value = (log((float(hertz) * 1024) / standard_pitch, 2) + 1.0 / 24) * 12\
+ 9 # notes.note_to_int("A")
self.name = notes.int_to_note(int(value) % 12)
self.octave = int(value / 12) - 6
return self
def from_hertz(self, hertz, standard_pitch=440):
"""Set the Note name and pitch, calculated from the hertz value.
The standard_pitch argument can be used to set the pitch of A-4,
from which the rest is calculated.
"""
value = ((log((float(hertz) * 1024) / standard_pitch, 2) +
1.0 / 24) * 12 + 9) # notes.note_to_int("A")
self.name = notes.int_to_note(int(value) % 12)
self.octave = int(value / 12) - 6
return self
def to_dict(self):
info = row2dict(self)
info['match'] = []
for k in self.keys:
key, is_major = KEYS[k]
key_result = {'key': notes.int_to_note(key), 'isMajor': is_major, 'forms': defaultdict(float)}
for tf in TrackForm.get_forms(self):
if tf.form.key == key:
key_result['forms'][tf.form.name] = tf.match
key_result['scale'] = tf.form.scale.name
info['match'].append(key_result)
return info
def from_int(self, integer):
"""Set the Note corresponding to the integer.
0 is a C on octave 0, 12 is a C on octave 1, etc.
Example:
>>> Note().from_int(12)
'C-1'
"""
self.name = notes.int_to_note(integer % 12)
self.octave = integer // 12
return self
def from_int(self, integer):
"""Set the Note corresponding to the integer.
0 is a C on octave 0, 12 is a C on octave 1, etc.
Example:
>>> Note().from_int(12)
'C-1'
"""
self.name = notes.int_to_note(integer % 12)
self.octave = integer // 12
return self
def from_int(self, integer):
"""Sets the Note corresponding to the integer. 0 is a C on octave 0, \
12 is a C on octave 1, etc.
{{{
>>> c = Note()
>>> c.from_int(12)
>>> c
'C-1'
}}}"""
self.name = notes.int_to_note(integer % 12)
self.octave = integer / 12
return self
def from_hertz(self, hertz, standard_pitch: int = 440) -> 'Note':
"""Set the Note name and pitch, calculated from the hertz value.
The standard_pitch argument can be used to set the pitch of A-4,
from which the rest is calculated.
"""
value = ((log(
(float(hertz) * 1024) / standard_pitch, 2) + 1.0 / 24) * 12 + 9
) # notes.note_to_int("A")
self.name = notes.int_to_note(int(value) % 12)
self.octave = int(value / 12) - 6
return self
def setup(self):
for x in Options.get_available_instruments():
self.ui.algorithm.addItem(x)
m = MidiInstrument()
d = 1
for x in m.names:
self.ui.midi.addItem("%d. %s" % (d, x))
d += 1
self.connect(self.ui.algorithm,
QtCore.SIGNAL("activated(int)"),
lambda x: self.load_instrument(self.ui.algorithm.currentText()))
self.connect(self.ui.buttonBox,
QtCore.SIGNAL("accepted()"),
lambda: self.save_instrument())
for x in range(116):
self.ui.minnote.addItem("%s-%d" % (int_to_note(x % 12), x / 12 + 1))
self.ui.maxnote.addItem("%s-%d" % (int_to_note(x % 12), x / 12 + 1))
def from_int(self, integer):
"""Sets the Note corresponding to the integer. 0 is a C on octave 0, 12 is \
a C on octave 1, etc.
{{{
>>> c = Note()
>>> c.from_int(12)
>>> c
'C-1'
}}}"""
self.name = notes.int_to_note(integer % 12)
self.octave = integer // 12
return self
def normalizeScale(self, scale):
int_scale = {};
note_scale = [];
for note in scale:
int_scale[notes.note_to_int(note)] = note;
od = collections.OrderedDict(sorted(int_scale.items(), key=lambda t: t[0]));
for key in od.iterkeys():
note_scale.append(notes.int_to_note(key));
return note_scale;
def fib_seq(offset=0):
track = Track(instrument=Piano())
stop_at = 60
i = 1
f = 1
while f < stop_at:
f = fib(i) + offset
ni = f % 12
octave = (f / 12) + 1
note = notes.int_to_note(ni)
track.add_notes('%s-%d'%(note, octave), 4)
i += 1
return track
def alternative_progression(key, major):
if major: #major
first = notes.int_to_note((notes.note_to_int(key) + 9) % 12)
second = notes.int_to_note((notes.note_to_int(key) + 7) % 12)
third = notes.int_to_note((notes.note_to_int(key) + 5) % 12)
return [[key, True], [first, False], [second, True], [third, True]]
else: #minor
first = notes.int_to_note((notes.note_to_int(key) + 3) % 12)
second = notes.int_to_note((notes.note_to_int(key) + 7) % 12)
third = notes.int_to_note((notes.note_to_int(key) + 5) % 12)
return [[key, False], [first, True], [second, False], [third, False]]
def test_valid_int_to_note(self):
n = [
'C',
'C#',
'D',
'D#',
'E',
'F',
'F#',
'G',
'G#',
'A',
'A#',
'B',
]
list(map(lambda x: self.assertEqual(n[x], notes.int_to_note(x),
'Int to note mapping %d-%s failed.' % (x, n[x])), list(range(0, 12))))
def test_valid_int_to_note(self):
n = [
'C',
'C#',
'D',
'D#',
'E',
'F',
'F#',
'G',
'G#',
'A',
'A#',
'B',
]
map(lambda x: self.assertEqual(n[x], notes.int_to_note(x),
'Int to note mapping %d-%s failed.' % (x, n[x])), range(0, 12))
def __init__(self, outer_radius, inner_radius, ref_colors=None):
self.notes = {
int_to_note((i * 7) % 12, 'b'): None
for i in range(0, 12)
} # Circle of fifths
if ref_colors is None:
ref_colors = {
SectorRing.STATE_IDLE: [[255, 120, 12], [255, 8, 45]],
SectorRing.STATE_PRESSED: [[0, 255, 255], [0, 128, 255]],
}
i = 0
for note in self.notes:
self.notes[note] = SectorRing.Sector(outer_radius, inner_radius,
math.pi / 6.4,
-2 * (i - 2) * math.pi / 12,
10, ref_colors)
i += 1
def loop(self):
buffer = self._stream.read(self._bufferSize)
self.pitchTracker.Q.put(buffer)
pitch = int(round(self.pitchTracker.pitch))
if self.key != "":
key = self.key[0]
majorMinor = self.key[-5:]
# Generate scale from key
if majorMinor == "major":
scale = scales.get_notes(key)
else:
scale = scales.get_notes(notes.reduce_accidentals(key + "###"))
scale[4] = notes.reduce_accidentals(scale[4] + "#")
note = notes.reduce_accidentals(notes.int_to_note(pitch % 12))
if not note in scale:
minDiff = 1000
dPitch = 0
for n in scale:
diff = abs(notes.note_to_int(n) - notes.note_to_int(note))
if diff < minDiff:
minDiff = diff
dPitch = notes.note_to_int(n) - notes.note_to_int(note)
pitch += dPitch
print(pitch)
if pitch > 10:
self._noAudio = 0
self._maxLive.send_message("/pitch", pitch)
self._maxLive.send_message("/key", notes.note_to_int(key))
else:
self._noAudio += 1
print("*** No Audio! " + str(self._noAudio))
if self._noAudio > 100:
self.done.set()
self.terminate()
time.sleep(0.00001)
def create_random_track(key, happy, bars):
temp = notes.note_to_int(key)
key = notes.int_to_note(temp, 'b') #convert all accidentals to flats
newTrack = Track()
progressionChoice = alternative_progression(
key, happy) #get an array of the possible progressions
prevProg = False
for i in range(0, bars):
curBar = Bar(key, (4, 4))
if (prevProg): #if it's not the first bar
progIndex = prevProgInd + random.choice([1, -1])
# make sure the current progression is next to the previous one
if progIndex == -1:
progIndex = 3
elif progIndex == 4:
progIndex = 0
else:
progIndex = random.choice(range(
0, 4)) #the first progression is randmly chosen
prevProg = True
prevProgInd = progIndex
useProgression = progressionChoice[progIndex]
Progression = make_progression(useProgression[0],
useProgression[1]) #get the progression
prevChord = False
while curBar.current_beat < 1:
if (prevChord): #if it's not the first chord
chordIndex = prevInd + random.choice([1, -1])
# to make sure the current chord is next to the previous one in the progression
if chordIndex == -1:
chordIndex = 3
elif chordIndex == 4:
chordIndex = 0
else:
chordIndex = random.choice(
range(0, 4)
) #the first chord is a random chord from the progression
prevChord = True
curBar.place_notes(Progression[chordIndex], 4)
prevInd = chordIndex
newTrack + curBar #add bar to the track
return newTrack
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
icon = pyglet.image.load(os.path.join(this_dir, 'icon.png'))
self.set_icon(icon)
self.set_minimum_size(300, 300)
gl.glClearColor(0.2, 0.2, 0.21, 1)
self.font = TrueTypeMonoFont("Liberation Mono", 64)
self.inner_ring = SectorRing(
0.8, 0.7, {
SectorRing.STATE_IDLE: [[255, 120, 12], [255, 8, 45]],
SectorRing.STATE_PRESSED: [[0, 255, 255], [0, 128, 255]],
})
self.outer_ring = SectorRing(
0.85, 0.82, {
SectorRing.STATE_IDLE: None,
SectorRing.STATE_PRESSED: [[0, 255, 0], [0, 128, 0]],
})
self.midi_in = rtmidi.MidiIn()
available_ports = self.midi_in.get_ports()
if available_ports:
midi_port_num = 1
self.midi_in_port = self.midi_in.open_port(midi_port_num)
print("Using MIDI Interface {}: '{}'".format(
midi_port_num, available_ports[midi_port_num]))
else:
print("Creating virtual MIDI input.")
self.midi_in_port = self.midi_in.open_virtual_port(
"midi_driving_in")
self.midi_in.set_callback(self.midi_received)
self.key_map = {i: int_to_note(i, 'b') for i in range(0, 12)}
self.press_counter = [0] * 12
self.memory_counter = [0] * 12
self.last_notes = FifoList()
def from_int(self, integer):
"""Sets the Note corresponding to the integer. 0 is a C on octave 0, \
12 is a C on octave 1, etc.
{{{
>>> c = Note()
>>> c.from_int(12)
>>> c
'C-1'
}}}"""
self.name = notes.int_to_note(integer % 12)
self.octave = integer / 12
return self
def measure(self, other):
"""Returns the number of semitones between this Note and the other.
{{{
>>> Note("C").measure(Note("D"))
2
>>> Note("D").measure(Note("C"))
-2
}}}"""
return int(other) - int(self)
def get_scale(self):
init_note = np.random.randint(0,12)
scale = np.random.randint(1,12)
note = notes.int_to_note(init_note)
if(scale == 1):
print("## Ionian Scale Selected!")
return scales.Ionian(note)
if(scale == 2):
print("## Dorian Scale Selected!")
return scales.Dorian(note)
if(scale == 3):
print("## Phrygian Scale Selected!")
return scales.Phrygian(note)
if(scale == 4):
print("## Lydian Scale Selected!")
return scales.Lydian(note)
if(scale == 5):
print("## Mixolydian Scale Selected!")
return scales.Mixolydian(note)
if(scale == 6):
print("## Aeolian Scale Selected!")
return scales.Aeolian(note)
if(scale == 7):
print("## Locrian Scale Selected!")
return scales.Locrian(note)
if(scale == 8):
print("## NaturalMinor Scale Selected!")
return scales.NaturalMinor(note)
if(scale == 9):
print("## HarmonicMinor Scale Selected!")
return scales.HarmonicMinor(note)
if(scale == 10):
print("## MelodicMinor Scale Selected!")
return scales.MelodicMinor(note)
if(scale == 11):
print("## WholeTone Scale Selected!")
return scales.WholeTone(note)
def assume_key(root, chord_type, mode):
if mode == 'harmonic_minor':
if chord_type in ['7b9']:
# assume V (C7b9 implies F harmonic minor, i.e. 7b9 is phyrgian dominant (V mode of HM)) TODO: refactor?
return notes.int_to_note(notes.note_to_int(root) - 7)
if chord_type in ['M7', 'M9', 'M13', 'M6']:
return root
elif chord_type in ['m7', 'm9', 'm11', 'm13']:
# assume II, e.g. Dm7 -> return C
return notes.int_to_note(notes.note_to_int(root) - 2)
elif chord_type in ['m7b9', 'm11b9', 'm13b9']:
# assume III
return notes.int_to_note(notes.note_to_int(root) - 4)
elif '#11' in chord_type:
# assume IV
return notes.int_to_note(notes.note_to_int(root) - 5)
elif chord_type in ['7', '9', '11', '13']:
# assume V
return notes.int_to_note(notes.note_to_int(root) - 7)
elif chord_type in ['m7b13']:
# assume VI
return notes.int_to_note(notes.note_to_int(root) - 9)
elif ('b5' in chord_type) or ('dim' in chord_type):
# assume VII
return notes.int_to_note(notes.note_to_int(root) - 11)
elif chord_type in [
'7b9'
]: # TODO: refactor so that this is not an ad hoc exception (given 7b9 is covered below) but instea maybe automatically check all hminor modes etc
pass
else:
print(
f'\nWarning: utilities.assume_key() does not know how to handle chord_type {chord_type}'
)
pass
def MIDI_to_Composition(self, file):
(header, track_data) = self.parse_midi_file(file)
c = Composition()
bpm = 120
if header[2]['fps']:
print "Don't know how to parse this yet"
return c
ticks_per_beat = header[2]['ticks_per_beat']
for track in track_data:
t = Track()
b = Bar()
metronome = 1 # Tick once every quarter note
thirtyseconds = 8 # 8 thirtyseconds in a quarter note
meter = (4, 4)
key = 'C'
for e in track:
(deltatime, event) = e
duration = float(deltatime) / (ticks_per_beat * 4.0)
if duration != 0.0:
duration = 1.0 / duration
if len(b.bar) > 0:
current_length = b.bar[-1][1]
b.bar[-1][1] = duration
if current_length - duration != 0:
b.current_beat -= 1.0 / current_length
b.current_beat += 1.0 / duration
if not b.place_notes(NoteContainer(), duration):
t + b
b = Bar(key, meter)
b.place_notes(NoteContainer(), duration)
if event['event'] == 8:
if deltatime == 0:
pass
elif event['event'] == 9:
# note on
n = Note(notes.int_to_note(event['param1'] % 12),
event['param1'] / 12 - 1)
n.channel = event['channel']
n.velocity = event['param2']
if len(b.bar) > 0:
b.bar[-1][2] + n
else:
b + n
elif event['event'] == 10:
# note aftertouch
pass
elif event['event'] == 11:
# controller select
pass
elif event['event'] == 12:
# program change
i = MidiInstrument()
i.instrument_nr = event['param1']
t.instrument = i
elif event['event'] == 0x0f:
# meta event Text
if event['meta_event'] == 1:
pass
elif event['meta_event'] == 3:
# Track name
t.name = event['data']
elif event['meta_event'] == 6:
# Marker
pass
elif event['meta_event'] == 7:
# Cue Point
pass
elif event['meta_event'] == 47:
# End of Track
pass
elif event['meta_event'] == 81:
# Set tempo warning Only the last change in bpm will get
# saved currently
mpqn = self.bytes_to_int(event['data'])
bpm = 60000000 / mpqn
elif event['meta_event'] == 88:
# Time Signature
d = event['data']
thirtyseconds = self.bytes_to_int(d[3])
metronome = self.bytes_to_int(d[2]) / 24.0
denom = 2**self.bytes_to_int(d[1])
numer = self.bytes_to_int(d[0])
meter = (numer, denom)
b.set_meter(meter)
elif event['meta_event'] == 89:
# Key Signature
d = event['data']
sharps = self.bytes_to_int(d[0])
minor = self.bytes_to_int(d[0])
if minor:
key = 'A'
else:
key = 'C'
for i in xrange(abs(sharps)):
if sharps < 0:
key = intervals.major_fourth(key)
else:
key = intervals.major_fifth(key)
b.key = Note(key)
else:
print 'Unsupported META event', event['meta_event']
else:
print 'Unsupported MIDI event', event
t + b
c.tracks.append(t)
return (c, bpm)
def key_finder():
return notes.int_to_note(random.randint(0, 11))
def pick_base_note(self):
"""
Randomly chooses a starting point for the scale when needed.
:return:
"""
return notes.int_to_note(random.randint(0, 11))
def __init__(self, tuning):
if not 0 <= tuning < 12:
raise ValueError(f"Tuning must be an integer in [0, 11].")
self.notes = tuple(notes.int_to_note((tuning + fret) % 12) for fret in range(self.FRETS))
import mingus.core.notes as notes
from mingus.midi import fluidsynth as fluidsynth
from math import sqrt
def fibonacci(n):
return int(((1+sqrt(5))**n-(1-sqrt(5))**n)/(2**n*sqrt(5)))
first_hundred_fibs = [fibonacci(x) for x in range(100)]
fib_notes = [notes.int_to_note(x % 12) for x in first_hundred_fibs]
print first_hundred_fibs
print fib_notes
fluidsynth.init("RolandNicePiano.sf2")
for note in fib_notes:
fluidsynth.play_Note(note)
class Scale(Enum):
IONIAN = 0
DORIAN = 1
PHRYGIAN = 2
LYDIAN = 3
MIXOLYDIAN = 4
AEOLIAN = 5
LOCRIAN = 6
MINORPENTATONIC = 7
MAJORPENTATONIC = 8
MINORBLUES = 9
MAJORBLUES = 10
NOTES_DICT = {notes.int_to_note(value, accidental): value for value in range(12) for accidental in ('#', 'b')}
KEYS = tuple((value, is_major) for is_major in (True, False) for value in range(12))
KEY_NAMES = tuple('C')
SCALES_DICT = {
scales.Ionian: Scale.IONIAN,
scales.Dorian: Scale.DORIAN,
scales.Phrygian: Scale.PHRYGIAN,
scales.Lydian: Scale.LYDIAN,
scales.Mixolydian: Scale.MIXOLYDIAN,
scales.Aeolian: Scale.AEOLIAN,
scales.Locrian: Scale.LOCRIAN,
scales.MinorPentatonic: Scale.MINORPENTATONIC,
scales.MajorPentatonic: Scale.MAJORPENTATONIC,
scales.MinorBlues: Scale.MINORBLUES,
def from_hertz(self, hertz, standard_pitch = 440):
"""Sets the Note name and pitch, calculated from the `hertz` value. \
The `standard_pitch` argument can be used to set the pitch of A-4, from \
which the rest is calculated."""
value = log(float(hertz) / standard_pitch, 2) * 12 + notes.note_to_int("A")
self.name = notes.int_to_note(int(value) % 12)
self.octave = int(value / 12) + 4
def to_shorthand(self):
"""Gives the traditional Helmhotz pitch notation.\
{{{
>>> Note("C-4").to_shorthand()
"c'"
>>> Note("C-3").to_shorthand()
'c'
>>> Note("C-2").to_shorthand()
'C'
>>> Note("C-1").to_shorthand()
'C,'
}}}"""
if self.octave < 3:
res = self.name
else:
res = str.lower(self.name)
o = self.octave - 3
while o < -1:
res += ","
o += 1
while o > 0:
res += "'"
o -= 1
return res
def from_shorthand(self, shorthand):
"""Convert from traditional Helmhotz pitch notation.\
{{{
>>> Note().from_shorthand("C,,")
'C-0'
>>> Note().from_shorthand("C")
'C-2'
>>> Note().from_shorthand("c'")
'C-4'
}}}"""
name = ""
octave = 0
for x in shorthand:
if x in ['a', 'b', 'c', 'd', 'e', 'f', 'g']:
name = str.upper(x)
octave = 3
elif x in ['A', 'B', 'C', 'D', 'E', 'F', 'G']:
name = x
octave = 2
elif x in ["#", "b"]:
name += x
elif x == ',':
octave -= 1
elif x == "'":
octave += 1
return self.set_note(name, octave, {})
# -*- coding: utf-8 -*-
#2018/8/26
#python2
import mingus.core.notes as notes
#检查音符合法性
notes.is_valid_note('C') # True
#音符、值互转
notes.note_to_int('C') # 0
notes.int_to_note(1) # C#
#半音升降
notes.augment('C') # C#
notes.diminish('C#') # C
#大小调转化(无方法)
#notes.to_minor('C') # A
#notes.to_major('A') # C
#无模块
#import mingus.core.diatonic as diatonic
#十二音
#diatonic.basic_keys
#E调七音
#diatonic.get_notes('E')
import mingus.core.intervals as interval
#间隔半音数
interval.measure('C', 'D') #2
import mingus.core.scales as scales
#爱奥尼音阶对象
def MIDI_to_Composition(self, file):
(header, track_data) = self.parse_midi_file(file)
c = Composition()
if header[2]['fps']:
print "Don't know how to parse this yet"
return c
ticks_per_beat = header[2]['ticks_per_beat']
for track in track_data:
# this loop will gather data for all notes,
# set up keys and time signatures for all bars
# and set the tempo and instrument for the track.
metronome = 1 # Tick once every quarter note
thirtyseconds = 8 # 8 thirtyseconds in a quarter note
step = 256.0 # WARNING: Assumes our smallest desired quantization step is a 256th note.
meter = (4, 4)
key = 'C'
bar = 0
beat = 0
now = (bar, beat)
b = None
started_notes = {}
finished_notes = {}
b = Bar(key=key, meter=meter)
bars = [b]
bpm = None
instrument = None
track_name = None
for deltatime, event in track:
if deltatime != 0:
duration = (ticks_per_beat * 4.0) / float(deltatime)
dur_q = int(round(step/duration))
length_q = int(b.length * step)
o_bar = bar
c_beat = beat + dur_q
bar += int(c_beat / length_q)
beat = c_beat % length_q
while o_bar < bar:
o_bar += 1
o_key = b.key
b = Bar(key=key, meter=meter)
b.key = o_key
bars.append(b)
now = (bar, beat)
if event['event'] == 8:
# note off
channel = event['channel']
note_int = event['param1']
velocity = event['param2']
note_name = notes.int_to_note(note_int % 12)
octave = note_int / 12 - 1
note = Note(note_name, octave)
note.channel = channel
note.velocity = velocity
x = (channel, note_int)
start_time = started_notes[x]
del started_notes[x]
end_time = now
y = (start_time, end_time)
if y not in finished_notes:
finished_notes[y] = []
finished_notes[y].append(note)
elif event['event'] == 9:
# note on
channel = event['channel']
note_int = event['param1']
velocity = event['param2']
x = (channel, note_int)
# add the note to the current NoteContainer
started_notes[x] = now
elif event['event'] == 10:
# note aftertouch
pass
elif event['event'] == 11:
# controller select
pass
elif event['event'] == 12:
# program change
# WARNING: only the last change in instrument will get saved.
i = MidiInstrument()
i.instrument_nr = event['param1']
instrument = i
elif event['event'] == 0x0f:
# meta event Text
if event['meta_event'] == 1:
pass
elif event['meta_event'] == 3:
# Track name
track_name = event['data']
elif event['meta_event'] == 6:
# Marker
pass
elif event['meta_event'] == 7:
# Cue Point
pass
elif event['meta_event'] == 47:
# End of Track
pass
elif event['meta_event'] == 81:
# Set tempo
# WARNING: Only the last change in bpm will get saved
mpqn = self.bytes_to_int(event['data'])
bpm_o = bpm
bpm = 60000000 / mpqn
elif event['meta_event'] == 88:
# Time Signature
d = event['data']
thirtyseconds = self.bytes_to_int(d[3])
metronome = self.bytes_to_int(d[2]) / 24.0
denom = 2 ** self.bytes_to_int(d[1])
numer = self.bytes_to_int(d[0])
meter = (numer, denom)
b.set_meter(meter)
elif event['meta_event'] == 89:
# Key Signature
d = event['data']
sharps = self.bytes_to_int(d[0])
minor = self.bytes_to_int(d[0])
if minor:
key = 'A'
else:
key = 'C'
for i in xrange(abs(sharps)):
if sharps < 0:
key = intervals.major_fourth(key)
else:
key = intervals.major_fifth(key)
b.key = Note(key)
else:
print 'Unsupported META event', event['meta_event']
else:
print 'Unsupported MIDI event', event
t = Track(instrument)
t.name = track_name
sorted_notes = {}
# sort the notes (so they are added to the bars in order)
# this loop will also split up notes that span more than one bar.
for x in finished_notes:
(start_bar, start_beat), (end_bar, end_beat) = x
if end_beat == 0:
end_bar -= 1
end_beat = int(bars[end_bar].length * step)
while start_bar <= end_bar:
nc = NoteContainer(finished_notes[x])
b = bars[start_bar]
if start_bar < end_bar:
# only executes when note spans more than one bar.
length_q = int(b.length * step)
dur = int(step/(length_q - start_beat))
else:
# always executes - add the final section of this note.
dur = int(step/(end_beat-start_beat))
if start_beat != 0:
at = float(start_beat)/step
else:
at = 0.0
if start_bar not in sorted_notes:
sorted_notes[start_bar] = {}
if at not in sorted_notes[start_bar]:
sorted_notes[start_bar][at] = (dur, nc)
# set our offsets for the next loop
start_beat = 0
start_bar += 1
# add all notes to all bars in order.
for start_bar in sorted(sorted_notes.keys()):
for at in sorted(sorted_notes[start_bar].keys()):
dur, nc = sorted_notes[start_bar][at]
bars[start_bar].place_notes_at(nc, dur, at)
# add the bars to the track, in order
for b in bars:
b.fill_with_rests()
t + b
# add the track to the composition
c.tracks.append(t)
return (c, bpm)
def MIDI_to_Composition(self, file): header, track_data = self.parse_midi_file(file) c = Composition() if header[2]["fps"]: print "Don't know how to parse this yet" return c ticks_per_beat = header[2]["ticks_per_beat"] for track in track_data: t = Track() b = Bar() metronome = 1 # Tick once every quarter note thirtyseconds = 8 # 8 thirtyseconds in a quarter note meter = (4,4) key = 'C' for e in track: deltatime, event = e duration = float(deltatime) / (ticks_per_beat * 4.0) if duration != 0.0: duration = 1.0 / duration if deltatime != 0: if not b.place_notes(NoteContainer(), duration): t + b b = Bar(key, meter) b.place_notes(NoteContainer(), duration) # note off if event["event"] == 8: if deltatime == 0: pass # note on elif event["event"] == 9: n = Note(notes.int_to_note(event["param1"] % 12), event["param1"] / 12 - 1) n.channel = event["channel"] n.velocity = event["param2"] if len(b.bar) > 0: b.bar[-1][2] + n else: b + n # note aftertouch elif event["event"] == 10: pass # controller select elif event["event"] == 11: pass # program change elif event["event"] == 12: i = MidiInstrument() i.instrument_nr = event["param1"] t.instrument = i # meta event elif event["event"] == 15: # Track name if event["meta_event"] == 3: t.name = event["data"] # Marker elif event["meta_event"] == 6: pass # Cue Point elif event["meta_event"] == 7: pass # End of Track elif event["meta_event"] == 47: pass # Set tempo #warning Only the last change in bpm will get saved currently elif event["meta_event"] == 81: mpqn = self.bytes_to_int(event["data"]) bpm = 60000000 / mpqn # Time Signature elif event["meta_event"] == 88: d = event["data"] thirtyseconds = self.bytes_to_int(d[3]) metronome = self.bytes_to_int(d[2]) / 24.0 denom = 2 ** self.bytes_to_int(d[1]) numer = self.bytes_to_int(d[0]) meter = (numer, denom) b.set_meter(meter) # Key Signature elif event["meta_event"] == 89: pass else: print "Unsupported META event", event["meta_event"] else: print "Unsupported MIDI event", event t + b c.tracks.append(t) return c, bpm
'''
Created on Jan 5, 2017
@author: stephenkoh
'''
import mingus.core.notes as notes
fibs = [1, 1]
for i in range(2, 1000):
fibs.append(fibs[i - 2] + fibs[i - 1])
fib_notes = []
for n in fibs:
fib_notes.append(notes.int_to_note(n % 12))
print(fibs)
print(len(fibs))
print(fib_notes)
print(len(fib_notes))
def normalizeNote(self, note):
int_note = notes.note_to_int(note);
return notes.int_to_note(int_note);
def pick_base_note(self):
"""Let me tell you what I am."""
return notes.int_to_note(random.randint(0, 11))
key = dict_musickey[h]
return (key)
#
#
#
#
#
if __name__ == "__main__":
image = "Average-Color.png"
avgcolor_img = cv2.imread(image)
cica = more_average(avgcolor_img)
print(cica)
octave = pick_octave(cica)
print("Octave: " + str(octave))
major = pick_major(avgcolor_img)
print("Major/Minor?: " + major)
#pixel_key = pick_key(avgcolor_img) #Note: Overflow error. do key later
note_list = []
note_list.append(notes.augment("C"))
note_list.append(notes.int_to_note(138 % 12))
print(note_list)
def MIDI_to_Composition(self, file):
(header, track_data) = self.parse_midi_file(file)
c = Composition()
if header[2]['fps']:
print("Don't know how to parse this yet")
return c
ticks_per_beat = header[2]['ticks_per_beat']
for track in track_data:
t = Track()
b = Bar()
metronome = 1 # Tick once every quarter note
thirtyseconds = 8 # 8 thirtyseconds in a quarter note
meter = (4, 4)
key = 'C'
for e in track:
(deltatime, event) = e
duration = float(deltatime) / (ticks_per_beat * 4.0)
if duration != 0.0:
duration = 1.0 / duration
if deltatime != 0:
if not b.place_notes(NoteContainer(), duration):
t + b
b = Bar(key, meter)
b.place_notes(NoteContainer(), duration)
if event['event'] == 8:
if deltatime == 0:
pass
elif event['event'] == 9:
# note on
n = Note(notes.int_to_note(event['param1'] % 12),
event['param1'] / 12 - 1)
n.channel = event['channel']
n.velocity = event['param2']
if len(b.bar) > 0:
b.bar[-1][2] + n
else:
b + n
elif event['event'] == 10:
# note aftertouch
pass
elif event['event'] == 11:
# controller select
pass
elif event['event'] == 12:
# program change
i = MidiInstrument()
i.instrument_nr = event['param1']
t.instrument = i
elif event['event'] == 0x0f:
# meta event Text
if event['meta_event'] == 1:
pass
elif event['meta_event'] == 3:
# Track name
t.name = event['data']
elif event['meta_event'] == 6:
# Marker
pass
elif event['meta_event'] == 7:
# Cue Point
pass
elif event['meta_event'] == 47:
# End of Track
pass
elif event['meta_event'] == 81:
# Set tempo warning Only the last change in bpm will get
# saved currently
mpqn = self.bytes_to_int(event['data'])
bpm = 60000000 / mpqn
elif event['meta_event'] == 88:
# Time Signature
d = event['data']
thirtyseconds = self.bytes_to_int(d[3])
metronome = self.bytes_to_int(d[2]) / 24.0
denom = 2 ** self.bytes_to_int(d[1])
numer = self.bytes_to_int(d[0])
meter = (numer, denom)
b.set_meter(meter)
elif event['meta_event'] == 89:
# Key Signature
d = event['data']
sharps = self.bytes_to_int(d[0])
minor = self.bytes_to_int(d[0])
if minor:
key = 'A'
else:
key = 'C'
for i in range(abs(sharps)):
if sharps < 0:
key = intervals.major_fourth(key)
else:
key = intervals.major_fifth(key)
b.key = Note(key)
else:
print('Unsupported META event', event['meta_event'])
else:
print('Unsupported MIDI event', event)
t + b
c.tracks.append(t)
return (c, bpm)
import mingus.core.notes as notes
import mingus.core.keys as keys
import mingus.core.intervals as intervals
print(notes.is_valid_note('C#'))
print(notes.int_to_note(0)) # [0,..,11]
print(keys.get_notes("C"))
print(intervals.second("E", "C"))
print(intervals.determine("Gbb", "Ab"))
print(intervals.determine("Gbb", "Ab", True))
print(intervals.measure("C", "D"))
print(intervals.measure("D", "C"))
def handle(self, argv=None):
"""
Main function.
Parses command, load settings and dispatches accordingly.
"""
help_message = "Please supply chord progression!. See --help for more options."
parser = argparse.ArgumentParser(
description=
'chords2midi - Create MIDI files from written chord progressions.\n'
)
parser.add_argument('progression',
metavar='U',
type=str,
nargs='*',
help=help_message)
parser.add_argument('-B',
'--bassline',
action='store_true',
default=False,
help='Throw an extra bassline on the pattern')
parser.add_argument('-b',
'--bpm',
type=int,
default=80,
help='Set the BPM (default 80)')
parser.add_argument('-t',
'--octave',
type=str,
default='4',
help='Set the octave(s) (ex: 3,4) (default 4)')
parser.add_argument('-i',
'--input',
type=str,
default=None,
help='Read from an input file.')
parser.add_argument('-k',
'--key',
type=str,
default='C',
help='Set the key (default C)')
parser.add_argument('-n',
'--notes',
type=int,
default=99,
help='Notes in each chord (default all)')
parser.add_argument('-d',
'--duration',
type=float,
default=1.0,
help='Set the chord duraction (default 1)')
parser.add_argument(
'-D',
'--directory',
action='store_true',
default=False,
help=
'Output the contents to the directory of the input progression.')
parser.add_argument(
'-H',
'--humanize',
type=float,
default=0.0,
help=
'Set the amount to "humanize" (strum) a chord, in ticks - try .11 (default 0.0)'
)
parser.add_argument(
'-o',
'--output',
type=str,
help=
'Set the output file path. Default is the current key and progression in the current location.'
)
parser.add_argument(
'-O',
'--offset',
type=float,
default=0.0,
help='Set the amount to offset each chord, in ticks. (default 0.0)'
)
parser.add_argument('-p',
'--pattern',
type=str,
default=None,
help='Set the pattern. Available patterns: ' +
(', '.join(patterns.keys())))
parser.add_argument(
'-r',
'--reverse',
action='store_true',
default=False,
help='Reverse a progression from C-D-E format into I-II-III format'
)
parser.add_argument('-v',
'--version',
action='store_true',
default=False,
help='Display the current version of chords2midi')
args = parser.parse_args(argv)
self.vargs = vars(args)
if self.vargs['version']:
version = pkg_resources.require("chords2midi")[0].version
print(version)
return
# Support `c2m I III V and `c2m I,III,V` formats.
if not self.vargs['input']:
if len(self.vargs['progression']) < 1:
print("You need to supply a progression! (ex I V vi IV)")
return
if len(self.vargs['progression']) < 2:
progression = self.vargs['progression'][0].split(',')
else:
progression = self.vargs['progression']
else:
with open(self.vargs['input']) as fn:
content = ''.join(fn.readlines()).strip()
content = content.replace('\n', ' ').replace(',', ' ')
progression = content.split(' ')
og_progression = progression
# If we're reversing, we don't need any of the MIDI stuff.
if self.vargs['reverse']:
result = ""
key = self.vargs['key']
for item in progression:
comps = pychord.Chord(item).components()
position = determine(comps, key, True)[0]
if 'M' in position:
position = position.upper()
position = position.replace('M', '')
if 'm' in position:
position = position.lower()
position = position.replace('m', '')
if 'B' in position:
position = position + "b"
position = position.replace('B', '')
result = result + position + " "
print result
return
track = 0
channel = 0
ttime = 0
duration = self.vargs['duration'] # In beats
tempo = self.vargs['bpm'] # In BPM
volume = 100 # 0-127, as per the MIDI standard
bar = 0
humanize_interval = self.vargs['humanize']
directory = self.vargs['directory']
num_notes = self.vargs['notes']
offset = self.vargs['offset']
key = self.vargs['key']
octaves = self.vargs['octave'].split(',')
root_lowest = self.vargs.get('root_lowest', False)
bassline = self.vargs['bassline']
pattern = self.vargs['pattern']
# Could be interesting to do multiple parts at once.
midi = MIDIFile(1)
midi.addTempo(track, ttime, tempo)
##
# Main generator
##
has_number = False
progression_chords = []
# Apply patterns
if pattern:
if pattern not in patterns.keys():
print("Invalid pattern! Must be one of: " +
(', '.join(patterns.keys())))
return
new_progression = []
input_progression = progression[:] # 2.7 copy
pattern_mask = patterns[pattern]
pattern_mask_index = 0
current_chord = None
while True:
pattern_instruction = pattern_mask[pattern_mask_index]
if pattern_instruction == "N":
if len(input_progression) == 0:
break
current_chord = input_progression.pop(0)
new_progression.append(current_chord)
elif pattern_instruction == "S":
new_progression.append(current_chord)
elif pattern_instruction == "X":
new_progression.append("X")
if pattern_mask_index == len(pattern_mask) - 1:
pattern_mask_index = 0
else:
pattern_mask_index = pattern_mask_index + 1
progression = new_progression
# We do this to allow blank spaces
for chord in progression:
# This is for # 'I', 'VI', etc
progression_chord = to_chords(chord, key)
if progression_chord != []:
has_number = True
# This is for 'C', 'Am', etc.
if progression_chord == []:
try:
progression_chord = [pychord.Chord(chord).components()]
except Exception:
# This is an 'X' input
progression_chord = [None]
chord_info = {}
chord_info['notes'] = progression_chord[0]
if has_number:
chord_info['number'] = chord
else:
chord_info['name'] = chord
if progression_chord[0]:
chord_info['root'] = progression_chord[0][0]
else:
chord_info['root'] = None
progression_chords.append(chord_info)
# For each input..
previous_pitches = []
for chord_index, chord_info in enumerate(progression_chords):
# Unpack object
chord = chord_info['notes']
# NO_OP
if chord == None:
bar = bar + 1
continue
root = chord_info['root']
root_pitch = pychord.utils.note_to_val(
notes.int_to_note(notes.note_to_int(root)))
# Reset internals
humanize_amount = humanize_interval
pitches = []
all_new_pitches = []
# Turns out this algorithm was already written in the 1800s!
# https://en.wikipedia.org/wiki/Voice_leading#Common-practice_conventions_and_pedagogy
# a) When a chord contains one or more notes that will be reused in the chords immediately following, then these notes should remain, that is retained in the respective parts.
# b) The parts which do not remain, follow the law of the shortest way (Gesetze des nachsten Weges), that is that each such part names the note of the following chord closest to itself if no forbidden succession XXX GOOD NAME FOR A BAND XXX arises from this.
# c) If no note at all is present in a chord which can be reused in the chord immediately following, one must apply contrary motion according to the law of the shortest way, that is, if the root progresses upwards, the accompanying parts must move downwards, or inversely, if the root progresses downwards, the other parts move upwards and, in both cases, to the note of the following chord closest to them.
root = None
for i, note in enumerate(chord):
# Sanitize notes
sanitized_notes = notes.int_to_note(notes.note_to_int(note))
pitch = pychord.utils.note_to_val(sanitized_notes)
if i == 0:
root = pitch
if root:
if root_lowest and pitch < root: # or chord_index is 0:
pitch = pitch + 12 # Start with the root lowest
all_new_pitches.append(pitch)
# Reuse notes
if pitch in previous_pitches:
pitches.append(pitch)
no_melodic_fluency = False # XXX: vargify
if previous_pitches == [] or all_new_pitches == [] or pitches == [] or no_melodic_fluency:
pitches = all_new_pitches
else:
# Detect the root direction
root_upwards = None
if pitches[0] >= all_new_pitches[0]:
root_upwards = True
else:
root_upwards = False
# Move the shortest distance
if pitches != []:
new_remaining_pitches = list(all_new_pitches)
old_remaining_pitches = list(previous_pitches)
for i, new_pitch in enumerate(all_new_pitches):
# We're already there
if new_pitch in pitches:
new_remaining_pitches.remove(new_pitch)
old_remaining_pitches.remove(new_pitch)
continue
# Okay, so need to find the overall shortest distance from the remaining pitches - including their permutations!
while len(new_remaining_pitches) > 0:
nearest_distance = 9999
previous_index = None
new_index = None
pitch_to_add = None
for i, pitch in enumerate(new_remaining_pitches):
# XXX: DRY
# The Pitch
pitch_to_test = pitch
nearest = min(old_remaining_pitches,
key=lambda x: abs(x - pitch_to_test))
old_nearest_index = old_remaining_pitches.index(
nearest)
if nearest < nearest_distance:
nearest_distance = nearest
previous_index = old_nearest_index
new_index = i
pitch_to_add = pitch_to_test
# +12
pitch_to_test = pitch + 12
nearest = min(old_remaining_pitches,
key=lambda x: abs(x - pitch_to_test))
old_nearest_index = old_remaining_pitches.index(
nearest)
if nearest < nearest_distance:
nearest_distance = nearest
previous_index = old_nearest_index
new_index = i
pitch_to_add = pitch_to_test
# -12
pitch_to_test = pitch - 12
nearest = min(old_remaining_pitches,
key=lambda x: abs(x - pitch_to_test))
old_nearest_index = old_remaining_pitches.index(
nearest)
if nearest < nearest_distance:
nearest_distance = nearest
previous_index = old_nearest_index
new_index = i
pitch_to_add = pitch_to_test
# Before we add it - just make sure that there isn't a better place for it.
pitches.append(pitch_to_add)
del old_remaining_pitches[previous_index]
del new_remaining_pitches[new_index]
# This is for the C E7 type scenario
if len(old_remaining_pitches) == 0:
for x, extra_pitch in enumerate(
new_remaining_pitches):
pitches.append(extra_pitch)
del new_remaining_pitches[x]
# Final check - can the highest and lowest be safely folded inside?
max_pitch = max(pitches)
min_pitch = min(pitches)
index_max = pitches.index(max_pitch)
folded_max = max_pitch - 12
if (folded_max > min_pitch) and (folded_max
not in pitches):
pitches[index_max] = folded_max
max_pitch = max(pitches)
min_pitch = min(pitches)
index_min = pitches.index(min_pitch)
folded_min = min_pitch + 12
if (folded_min < max_pitch) and (folded_min
not in pitches):
pitches[index_min] = folded_min
# Make sure the average can't be improved
# XXX: DRY
if len(previous_pitches) != 0:
previous_average = sum(previous_pitches) / len(
previous_pitches)
# Max
max_pitch = max(pitches)
min_pitch = min(pitches)
index_max = pitches.index(max_pitch)
folded_max = max_pitch - 12
current_average = sum(pitches) / len(pitches)
hypothetical_pitches = list(pitches)
hypothetical_pitches[index_max] = folded_max
hypothetical_average = sum(hypothetical_pitches) / len(
hypothetical_pitches)
if abs(previous_average -
hypothetical_average) <= abs(previous_average -
current_average):
pitches[index_max] = folded_max
# Min
max_pitch = max(pitches)
min_pitch = min(pitches)
index_min = pitches.index(min_pitch)
folded_min = min_pitch + 12
current_average = sum(pitches) / len(pitches)
hypothetical_pitches = list(pitches)
hypothetical_pitches[index_min] = folded_min
hypothetical_average = sum(hypothetical_pitches) / len(
hypothetical_pitches)
if abs(previous_average -
hypothetical_average) <= abs(previous_average -
current_average):
pitches[index_min] = folded_min
# Apply contrary motion
else:
print("Applying contrary motion!")
for i, new_pitch in enumerate(all_new_pitches):
if i == 0:
pitches.append(new_pitch)
continue
# Root upwards, the rest move down.
if root_upwards:
if new_pitch < previous_pitches[i]:
pitches.append(new_pitch)
else:
pitches.append(new_pitch - 12)
else:
if new_pitch > previous_pitches[i]:
pitches.append(new_pitch)
else:
pitches.append(new_pitch + 12)
# Bassline
if bassline:
pitches.append(root_pitch - 24)
# Melody
# Octave is a simple MIDI offset counter
for octave in octaves:
for note in pitches:
pitch = int(note) + (int(octave.strip()) * 12)
# Don't humanize bassline note
if bassline and (pitches.index(note) == len(pitches) - 1):
midi_time = offset + bar
else:
midi_time = offset + bar + humanize_amount
# Write the note
midi.addNote(track=track,
channel=channel,
pitch=pitch,
time=midi_time,
duration=duration,
volume=volume)
humanize_amount = humanize_amount + humanize_interval
if i + 1 >= num_notes:
break
bar = bar + 1
previous_pitches = pitches
##
# Output
##
if self.vargs['output']:
filename = self.vargs['output']
elif self.vargs['input']:
filename = self.vargs['input'].replace('.txt', '.mid')
else:
if has_number:
key_prefix = key + '-'
else:
key_prefix = ''
filename = key_prefix + '-'.join(og_progression) + '-' + str(tempo)
if bassline:
filename = filename + "-bassline"
if pattern:
filename = filename + "-" + pattern
if os.path.exists(filename):
filename = key_prefix + '-'.join(og_progression) + '-' + str(
tempo) + '-' + str(int(time.time()))
filename = filename + '.mid'
if directory:
directory_to_create = '-'.join(og_progression)
try:
os.makedirs(directory_to_create)
except OSError as exc: # Python >2.5
if exc.errno == errno.EEXIST and os.path.isdir(
directory_to_create):
pass
else:
raise
filename = directory_to_create + '/' + filename
with open(filename, "wb") as output_file:
midi.writeFile(output_file)
