def testAll(self):
from music21 import corpus, dynamics
a = corpus.parse('bach/bwv57.8')
a.parts[0].insert(0, dynamics.Dynamic('mf'))
a.parts[0].insert(10, dynamics.Dynamic('f'))
if self.show:
plotStream(a, 'all')
def testPlotChordsC(self):
from music21 import dynamics
from music21 import note
from music21 import stream
from music21 import scale
sc = scale.MajorScale('c4')
s = stream.Stream()
s.append(dynamics.Dynamic('f'))
s.append(note.Note('c4'))
s.append(sc.getChord('e3', 'a3', quarterLength=0.5))
# s.append(note.Note('c3', quarterLength=2))
s.append(dynamics.Dynamic('mf'))
s.append(sc.getChord('b3', 'e4', quarterLength=1.5))
s.append(dynamics.Dynamic('pp'))
s.append(sc.getChord('f4', 'g5', quarterLength=3))
s.append(sc.getChord('f4', 'g5', quarterLength=3))
s.append(note.Note('c5', quarterLength=3))
for args in [
('histogram', 'pitch'),
('histogram', 'pitchclass'),
('histogram', 'quarterlength'),
('scatter', 'pitch', 'quarterlength'),
('scatter', 'pitchspace', 'offset'),
('scatter', 'pitch', 'offset'),
('scatter', 'dynamics'),
('bar', 'pitch'),
('bar', 'pc'),
('weighted', 'pc', 'duration'),
('weighted', 'dynamics'),
]:
# s.plot(*args, doneAction='write')
s.plot(*args, doneAction=None)
def testRealizeVolumeA(self):
from music21 import stream, dynamics, note, volume
s = stream.Stream()
s.repeatAppend(note.Note('g3'), 16)
# before insertion of dynamics
match = [n.volume.cachedRealizedStr for n in s.notes]
self.assertEqual(match, [
'0.71', '0.71', '0.71', '0.71', '0.71', '0.71', '0.71', '0.71',
'0.71', '0.71', '0.71', '0.71', '0.71', '0.71', '0.71', '0.71'
])
for i, d in enumerate(['pp', 'p', 'mp', 'f', 'mf', 'ff', 'ppp', 'mf']):
s.insert(i * 2, dynamics.Dynamic(d))
# cached will be out of date in regard to new dynamics
match = [n.volume.cachedRealizedStr for n in s.notes]
self.assertEqual(match, [
'0.71', '0.71', '0.71', '0.71', '0.71', '0.71', '0.71', '0.71',
'0.71', '0.71', '0.71', '0.71', '0.71', '0.71', '0.71', '0.71'
])
# calling realize will set all to new cached values
volume.realizeVolume(s)
match = [n.volume.cachedRealizedStr for n in s.notes]
self.assertEqual(match, [
'0.35', '0.35', '0.5', '0.5', '0.64', '0.64', '0.99', '0.99',
'0.78', '0.78', '1.0', '1.0', '0.21', '0.21', '0.78', '0.78'
])
# we can get the same results without using realizeVolume, though
# this uses slower context searches
s = stream.Stream()
s.repeatAppend(note.Note('g3'), 16)
for i, d in enumerate(['pp', 'p', 'mp', 'f', 'mf', 'ff', 'ppp', 'mf']):
s.insert(i * 2, dynamics.Dynamic(d))
match = [n.volume.cachedRealizedStr for n in s.notes]
self.assertEqual(match, [
'0.35', '0.35', '0.5', '0.5', '0.64', '0.64', '0.99', '0.99',
'0.78', '0.78', '1.0', '1.0', '0.21', '0.21', '0.78', '0.78'
])
# loooking at raw velocity values
match = [n.volume.velocity for n in s.notes]
self.assertEqual(match, [
None, None, None, None, None, None, None, None, None, None, None,
None, None, None, None, None
])
# can set velocity with realized values
volume.realizeVolume(s, setAbsoluteVelocity=True)
match = [n.volume.velocity for n in s.notes]
self.assertEqual(match, [
45, 45, 63, 63, 81, 81, 126, 126, 99, 99, 127, 127, 27, 27, 99, 99
])
def testGetContextSearchB(self):
from music21 import stream, note, dynamics
s = stream.Stream()
d1 = dynamics.Dynamic('mf')
s.insert(0, d1)
d2 = dynamics.Dynamic('f')
s.insert(2, d2)
n1 = note.Note('g')
s.insert(4, n1)
# can get dynamics from volume object
self.assertEqual(n1.volume.getDynamicContext(), d2)
def testGetContextSearchA(self):
from music21 import stream, note, volume, dynamics
s = stream.Stream()
d1 = dynamics.Dynamic('mf')
s.insert(0, d1)
d2 = dynamics.Dynamic('f')
s.insert(2, d2)
n1 = note.Note('g')
v1 = volume.Volume(client=n1)
s.insert(4, n1)
# can get dynamics from volume object
self.assertEqual(v1.client.getContextByClass('Dynamic'), d2)
self.assertEqual(v1.getDynamicContext(), d2)
def testRealizeVolumeB(self):
from music21 import corpus, dynamics
s = corpus.parse('bwv66.6')
durUnit = s.highestTime // 8 # let floor
dyns = ['pp', 'p', 'mp', 'f', 'mf', 'ff', 'f', 'mf']
for i, p in enumerate(s.parts):
for j, d in enumerate(dyns):
oTarget = j*durUnit
# placing dynamics in Measure requires extra handling
m = p.getElementsByOffset(oTarget,
mustBeginInSpan=False).getElementsByClass('Measure')[0]
oInsert = oTarget - m.getOffsetBySite(p)
m.insert(oInsert, dynamics.Dynamic(d))
# shift 2 places each time
dyns = dyns[2:] + dyns[:2]
#s.show()
#s.show('midi')
#### TODO: BUG -- one note too loud...
match = [n.volume.cachedRealizedStr for n in s.parts[0].flat.notes]
self.assertEqual(match, ['0.35', '0.35', '0.35', '0.35', '0.35', '0.5', '0.5', '0.5', '0.5', '0.64', '0.64', '0.64', '0.64', '0.64', '0.99', '0.99', '0.99', '0.99', '0.78', '0.78', '0.78', '0.78', '1.0', '1.0', '1.0', '1.0', '0.99', '0.99', '0.99', '0.99', '0.78', '0.78', '0.78', '0.78', '0.78', '0.78', '0.78'])
match = [n.volume.cachedRealizedStr for n in s.parts[1].flat.notes]
self.assertEqual(match, ['0.64', '0.64', '0.64', '0.64', '0.99', '0.99', '0.99', '0.99', '0.99', '0.78', '0.78', '0.78', '0.78', '0.78', '1.0', '1.0', '1.0', '1.0', '0.99', '0.99', '0.99', '0.99', '0.99', '0.78', '0.78', '0.78', '0.78', '0.35', '0.35', '0.35', '0.35', '0.35', '0.35', '0.5', '0.5', '0.5', '0.5', '0.5', '0.5', '0.5', '0.5', '0.5'])
match = [n.volume.cachedRealizedStr for n in s.parts[3].flat.notes]
self.assertEqual(match, ['0.99', '0.99', '0.99', '0.99', '0.99', '0.78', '0.78', '0.78', '0.78', '0.78', '0.35', '0.35', '0.35', '0.35', '0.35', '0.5', '0.5', '0.5', '0.5', '0.5', '0.5', '0.5', '0.64', '0.64', '0.64', '0.64', '0.99', '0.99', '0.99', '0.99', '0.78', '0.78', '0.78', '0.78', '0.78', '1.0', '1.0', '1.0', '1.0', '1.0', '1.0'])
def testGetRealizedA(self):
from music21 import volume, dynamics
v1 = volume.Volume(velocity=64)
self.assertEqual(v1.getRealizedStr(), '0.5')
d1 = dynamics.Dynamic('p')
self.assertEqual(v1.getRealizedStr(useDynamicContext=d1), '0.35')
d1 = dynamics.Dynamic('ppp')
self.assertEqual(v1.getRealizedStr(useDynamicContext=d1), '0.15')
d1 = dynamics.Dynamic('fff')
self.assertEqual(v1.getRealizedStr(useDynamicContext=d1), '0.91')
# if vel is at max, can scale down with a dynamic
v1 = volume.Volume(velocity=127)
d1 = dynamics.Dynamic('fff')
self.assertEqual(v1.getRealizedStr(useDynamicContext=d1), '1.0')
d1 = dynamics.Dynamic('ppp')
self.assertEqual(v1.getRealizedStr(useDynamicContext=d1), '0.3')
d1 = dynamics.Dynamic('mp')
self.assertEqual(v1.getRealizedStr(useDynamicContext=d1), '0.9')
d1 = dynamics.Dynamic('p')
self.assertEqual(v1.getRealizedStr(useDynamicContext=d1), '0.7')
def testHorizontalInstrumentationB(self):
from music21 import corpus, dynamics
s = corpus.parse('bwv66.6')
dyn = ['p', 'mf', 'f', 'ff', 'mp', 'fff', 'ppp']
i = 0
for p in s.parts:
for m in p.getElementsByClass('Measure'):
m.insert(0, dynamics.Dynamic(dyn[i % len(dyn)]))
i += 1
s.plot('dolan', fillByMeasure=True, segmentByTarget=True, doneAction=None)
def testDynamicsPositionA(self):
from music21 import stream, note, dynamics
s = stream.Stream()
selections = ['pp', 'f', 'mf', 'fff']
#positions = [-20, 0, 20]
for i in range(10):
d = dynamics.Dynamic(selections[i % len(selections)])
#d.positionVertical = positions[i%len(positions)]
s.append(d)
s.append(note.Note('c1'))
def createDynamics(self, attributes):
r'''
Adding dynamics like "fff", "pp", ... to the measure.
>>> nwt = noteworthy.translate.NoteworthyTranslator()
>>> nwt.currentMeasure = stream.Measure()
>>> nwt.createDynamics({"Style":"fff","Pos":"-8"})
>>> nwt.currentMeasure[0]
<music21.dynamics.Dynamic fff >
'''
# Dynamic case
if 'Style' in attributes:
g = dynamics.Dynamic(attributes['Style'])
self.currentMeasure.append(g)
def testDynamicsPositionB(self):
import random
from music21 import stream, note, layout, dynamics
s = stream.Stream()
for i in range(6):
m = stream.Measure(number=i + 1)
m.append(layout.SystemLayout(isNew=True))
m.append(note.Rest(type='whole'))
s.append(m)
for m in s.getElementsByClass('Measure'):
offsets = [x * .25 for x in range(16)]
random.shuffle(offsets)
offsets = offsets[:4]
for o in offsets:
d = dynamics.Dynamic('mf')
d.positionVertical = 20
m.insert(o, d)
def testShowAllTypes(self):
'''
show all known types to display
tests fromMusic21Object()
'''
from music21 import scale
from music21 import chord
from music21 import duration
from music21 import dynamics
from music21 import meter
from music21 import pitch
m = stream.Measure()
n = note.Note("D#6")
m.repeatAppend(n, 6)
m.show()
s = stream.Stream()
s.repeatAppend(n, 6)
s.show()
s = stream.Score()
s.repeatAppend(n, 6)
s.show()
s = stream.Score()
p = stream.Part()
p.repeatAppend(n, 6)
p2 = stream.Part()
p2.repeatAppend(n, 6)
s.insert(0, p)
s.insert(0, p2)
s.show()
#emptyStream
s = stream.Stream()
s.show()
p2.show()
n.show()
c = chord.Chord(['C3', 'D4', 'E5'])
c.show()
r = note.Rest()
r.show()
p = pitch.Pitch()
p.show()
d = duration.Duration(2.0)
d.show()
#empty duration! shows blank 4/4 measure, maybe with default rest.
d = duration.Duration()
d.show()
mf = dynamics.Dynamic('mf')
mf.show()
cm = scale.MajorScale('C')
cm.show()
o = scale.OctatonicScale("C#4")
o.show()
ts = meter.TimeSignature('3/4')
ts.show()