def add_arpeggio(self, track, time, chords_beat=[], notes_beat=[],
chords=[], velocities=[], note_skip=LoopingArray([1, 2, 3]), length=0):
track = MidiTrack(channel=track, tempo=self.tempo)
beat_index = time
bi = beat_index
while beat_index - time < length:
chordindex = 0
beat_value, _ = chords_beat.next()
chord = chords.next()
while (bi < beat_index + beat_value) and (bi < length):
chordindex = note_skip.next()
note = chord[chordindex % len(chord)]
notes_beat_value, notes_duration_value = notes_beat.next()
track.add_note(
bi,
notes_duration_value,
note,
velocities.next())
bi += notes_beat_value
beat_index += beat_value
self.midi.tracks.append(track)
def add_arpeggio(self,
track,
time,
chords_beat=[],
notes_beat=[],
chords=[],
velocities=[],
note_skip=LoopingArray([1, 2, 3]),
length=0):
track = MidiTrack(channel=track, tempo=self.tempo)
beat_index = time
bi = beat_index
while beat_index - time < length:
chordindex = 0
beat_value, _ = chords_beat.next()
chord = chords.next()
while (bi < beat_index + beat_value) and (bi < length):
chordindex = note_skip.next()
note = chord[chordindex % len(chord)]
notes_beat_value, notes_duration_value = notes_beat.next()
track.add_note(bi, notes_duration_value, note,
velocities.next())
bi += notes_beat_value
beat_index += beat_value
self.midi.tracks.append(track)
def add_track(self, track, time, trackname='',
beat=[], notes=[], velocities=[], length=0):
# append to existing track
if track < len(self.midi.tracks):
track = self.midi.tracks[track]
else:
track = MidiTrack(channel=track, tempo=self.tempo)
self.midi.tracks.append(track)
beat_index = time
while beat_index - time < length:
beat_value, duration_value = beat.next()
for note in notes.next():
track.add_note(
beat_index,
duration_value,
note, velocities.next()
)
beat_index += beat_value
def add_track(self,
track,
time,
trackname='',
beat=[],
notes=[],
velocities=[],
length=0):
# append to existing track
if track < len(self.midi.tracks):
track = self.midi.tracks[track]
else:
track = MidiTrack(channel=track, tempo=self.tempo)
self.midi.tracks.append(track)
beat_index = time
while beat_index - time < length:
beat_value, duration_value = beat.next()
for note in notes.next():
track.add_note(beat_index, duration_value, note,
velocities.next())
beat_index += beat_value
def midify(vec,
out_file,
key="C",
scale=MAJOR,
bpm=120,
count=0.25,
channel=1,
min_note="C-1",
max_note="G9"):
# transform keys and min/max notes
key = root_to_midi(key)
min_note = note_to_midi(min_note)
max_note = note_to_midi(max_note)
# select notes
notes = build_scale(key, scale, min_note, max_note)
# scale notes
note_indexes = scale_vec(vec, low=0, high=(len(notes) - 1))
# determinte note length
beat = bpm_time(bpm, count)
# generate midi file
m = MidiFileGenerator()
track = MidiTrack(channel=channel, tempo=bpm)
t = 0
for i in note_indexes:
n = notes[i]
track.add_note(time=t, duration=beat, note=n, velocity=100)
t += beat
m.tracks.append(track)
m.writeToFile(out_file)