def rhythmLine(baseNote=None, minLength=8.0, maxProbability=0.5):
if baseNote is None:
baseNote = note.QuarterNote()
newStream = stream.Part()
while newStream.duration.quarterLength < minLength:
currentProbability = (newStream.duration.quarterLength /
minLength) * maxProbability
newNote = copy.deepcopy(baseNote)
x = random.random()
while x < currentProbability:
# print(x, currentProbability)
newNote.duration = alterRhythm(newNote.duration)
currentProbability *= .75
x = random.random()
y = random.random()
z = random.random()
if z < 0.5:
direction = 1
else:
direction = -1
while y < currentProbability:
# print(x, currentProbability)
newNote.ps += direction
currentProbability *= .75
y = random.random()
newNote.articulations.append(articulations.Staccatissimo())
newStream.append(newNote)
#newStream.getNoteTimeInfo()
return newStream
def happyBirthday():
hb = tinyNotation.TinyNotationStream\
("d8. d16 e4 d g f#2 d8. d16 e4 d a g2 "
"d8. d16 d'4 b g8. g16 f#4 e c'8. c'16 b4 g a g2", "3/4")
hb.insert(0, key.KeySignature(1))
hb.insert(0, tempo.TempoText("Brightly"))
hb.insert(0, tempo.MetronomeMark(number = 120, referent = note.QuarterNote()))
hb.makeNotation(inPlace=True, cautionaryNotImmediateRepeat=False)
return hb
def export(self):
"""Export the transcribed music."""
if ( self.saveFileStr.get() not in self.saveDefault ):
# Set the tempo
tempoObject = tempo.MetronomeMark( None,
int(self.tempo.get()),
note.QuarterNote() )
self.transcribedPart.insert(tempoObject)
# Write to disk
success = self.transcribedPart.write(fp=self.saveFile)
if ( success ):
saveMsg = "Your file has been saved to %s." % success
tkMessageBox.showinfo("File saved!", saveMsg )
elif ( self.saveFileStr.get() == "" ):
self.saveFileStr.set(self.saveDefault)
pass
else:
# Don't have a save location... should get that
self.getSavePath()
self.export()
def testStreamLilySimple(self):
from music21 import meter, note, stream
b = stream.Stream()
b.insert(0, note.QuarterNote('C5'))
b.insert(1, note.QuarterNote('D5'))
b.insert(2, note.QuarterNote('E5'))
b.insert(3, note.QuarterNote('F5'))
b.insert(4, note.QuarterNote('G5'))
b.insert(5, note.QuarterNote('A5'))
bestC = b.bestClef(allowTreble8vb=True)
ts = meter.TimeSignature("3/4")
b.insert(0, bestC)
b.insert(0, ts)
conv = LilypondConverter()
outStr = conv.fromObject(b)
self.assertEqual(
outStr,
u'\n { \\clef "treble" \\time 3/4 c\'\'4 d\'\'4 e\'\'4 f\'\'4 g\'\'4 a\'\'4 }'
)