def compose(sourceFile, outputFileName, length):
markov = Markov(sourceFile)
sequenceLength = markov.sequenceLength()
# Build random beging of song
notes = []
for i in range(sequenceLength):
notes.append(random.randint(50, 60))
# Build list of notes
while (len(notes) < length):
newNote = markov.get(notes[-sequenceLength:])
if newNote is not None:
notes.append(int(newNote))
else:
print "INFO: No possible note found"
del notes[-1]
print "Song Composed:"
print notes
# Make patern into
pattern = midi.Pattern()
pattern.make_ticks_abs()
track = midi.Track()
pattern.append(track)
for note in notes:
on = midi.NoteOnEvent(tick=0, velocity=NOTE_VELOCITY, pitch=note)
off = midi.NoteOffEvent(tick=NOTE_DURATION[get_rand_duration()],
pitch=note)
track.append(on)
track.append(off)
eot = midi.EndOfTrackEvent(tick=1)
track.append(eot)
midi.write_midifile(outputFileName, pattern)
print "Song written to file: %s" % outputFileName
def compose(pitchInputFileName, rhythmInputFileName, outputFileName,
songLength):
pitchTransitions = Markov(pitchInputFileName)
pithOrder = pitchTransitions.order()
rhythmTransitions = Markov(rhythmInputFileName)
rhythmOrder = rhythmTransitions.order()
print "Markovs loaded into memmory"
# Build random beging of song
chords = []
for i in range(pithOrder):
chords.append([random.randint(50, 60)])
# Build list of chords
while (len(chords) < songLength):
newChord = pitchTransitions.get(chords[-pithOrder:])
if newChord is not None:
newChord = ast.literal_eval(newChord)
chords.append(newChord)
else:
print "INFO: No possible pitch/chord found"
del chords[-1]
chords.append([random.randint(50, 60)])
# prettier endings
chords[-1] = chords[-2]
# Create begining of rhythm track
rhythms = []
for i in range(rhythmOrder):
rhythms.append(4)
# Build list of note lengths
while (len(rhythms) < songLength):
newLength = rhythmTransitions.get(rhythms[-rhythmOrder:])
if newLength is not None:
newLength = int(newLength)
rhythms.append(newLength)
else:
print "INFO: No possible rhythm found"
del rhythms[-1]
#SONG SHOULD END WITH HOLE NOTE
rhythms[-1] = 16
rhythms[-2] = 16
print "Song Composed:"
# Make patern into
pattern = midi.Pattern()
pattern.make_ticks_abs()
track = midi.Track()
pattern.append(track)
for i in range(songLength):
length = int((220 / 16) * rhythms[i])
# for pitch in chords[i]:
for pitch in chords[i]:
on = midi.NoteOnEvent(tick=0, velocity=NOTE_VELOCITY, pitch=pitch)
track.append(on)
for pitch in chords[i]:
off = midi.NoteOffEvent(tick=length, pitch=pitch)
track.append(off)
eot = midi.EndOfTrackEvent(tick=0)
track.append(eot)
midi.write_midifile(outputFileName, pattern)
print "Song written to file: %s" % outputFileName
