def different_sections():
func_name = 'different_sections'
print 'Running {}...'.format(func_name)
marimba = Marimba()
audio_duration_seconds = 120
audio = Audio(audio_duration_seconds)
sections = Sections(32, len(audio))
scale_type = [0, 4, 7]
root = 0
for section in sections:
section.root = root
scale = [(pc + root) % 12 for pc in scale_type]
section.scale = [p for p in range(60, 73) if p % 12 in scale]
root = (root + 1) % 12
max_start = len(audio) - 80000
n_notes = audio_duration_seconds * 5
for _ in range(n_notes):
start = np.random.randint(0, max_start)
scale = sections.get_by_sample_offset(start).scale
midi_number = np.random.choice(scale)
note = marimba.get_note(midi_number)
audio.add(start, note)
audio.write_wav(func_name)
print 'Done running {}.'.format(func_name)
class Diss(object):
def __init__(self):
self.duration_seconds = 240
self.setup()
self.go()
self.closeout()
def setup(self):
self.name = 'Diss'
print 'Running {}...'.format(self.name)
self.marimba = Marimba()
self.audio = Audio(self.duration_seconds)
self.len_audio = len(self.audio)
def closeout(self):
self.audio.write_wav(self.name)
print 'Done running {}.'.format(self.name)
def go(self):
pitch_options = [p for p in range(64, 87) if p % 12 in [0, 2, 4, 7, 9]]
melody = dissonant_counterpoint(pitch_options, multiplier=10, skip=20)
beats = Sections(self.duration_seconds * 4, self.len_audio - 80000)
for beat in beats:
if beat.index % 4:
pitch = melody.next()
note = self.marimba.get_note(pitch)
self.audio.add(beat.start, note)
pitch_options = [p for p in range(48, 62) if p % 12 in [0, 2, 4, 7, 9]]
melody = dissonant_counterpoint(pitch_options, multiplier=10, skip=20)
beats = Sections(self.duration_seconds, self.len_audio - 80000)
for beat in beats:
pitch = melody.next()
note = self.marimba.get_note(pitch)
self.audio.add(beat.start, note)
def random_cents_fifths():
total_duration_seconds = 120
notes_per_second = 1.2
marimba = Marimba()
audio = Audio(total_duration_seconds)
total_duration_samples = audio.sample_rate * total_duration_seconds
midi_numbers = marimba.get_midi_numbers(cents=True)[:-4000]
ticks = int(total_duration_seconds * notes_per_second)
for _ in range(ticks):
print _, 'of', ticks
start = np.random.randint(audio.n_samples - 100000)
midi_number = np.random.choice(midi_numbers)
sample = marimba.get_note(midi_number)
audio.add(start, sample)
max_delay = .3 * audio.sample_rate
end_minus_padding = audio.n_samples - (max_delay * 15)
if start < end_minus_padding:
delay = audio.sample_rate * np.random.normal(.12, .017)
for _ in range(4):
start += delay
echo_start = int(start)
midi_number += 7.02
echo_sample = marimba.get_note(midi_number)
audio.add(echo_start, echo_sample)
audio.write_wav('random-uniform')
def make_music():
sr = 44100
denis_audio, _ = librosa.load('denis-curran-short.mp3', mono=True, sr=sr)
cqt = np.abs(librosa.cqt(denis_audio, sr=sr)).T
denis_pitches = np.argmax(cqt, 1) * (np.max(cqt, 1) > .7)
audio = Audio(initial_audio=denis_audio)
# audio._audio += denis_audio
# audio.add(0, denis_audio)
# audio = np.zeros([len(denis_audio), 2])
# audio = (audio.T + denis_audio).T
marimba = Marimba()
previous_notes = np.ones(marimba.n_notes) * -100
previous_note_i = -100
chord = random_chord()
hop_length = 512
len_denis_pitches = len(denis_pitches)
for i, p in enumerate(denis_pitches):
print i, 'of', len_denis_pitches, p
if p > 0 and i - previous_note_i > 3:
if i - previous_note_i > 50:
chord = random_chord()
t = i * hop_length
p = note_in_chord(chord, p)
while p >= marimba.n_notes:
p -= 12
if np.random.random() > .5:
while p > 0 and i - previous_notes[p] < 10:
p -= 12
if p < 0:
continue
else:
while p < 60 and i - previous_notes[p] < 10:
p += 12
if p >= 60:
continue
note = marimba.get_note(p)
length = min(audio.n_samples - t, len(note))
pan = np.random.random()
audio.add(t, note[:length], pan=pan)
# audio[t:t + length, 0] += note[:length] * pan * .1
# audio[t:t + length, 1] += note[:length] * (1 - pan) * .1
previous_note_i = i
previous_notes[p] = i
audio.write_wav('denis-marimba')
def et_experiment(pitches_per_halfstep=3,
notes_per_second=2.5,
duration_seconds=30):
print 'Running et_experiment...'
marimba = Marimba()
audio = Audio(duration_seconds)
max_start = len(audio) - 50000
min_note = 36.0
max_note = 96.0
n_halfsteps = max_note - min_note
n_pitches = n_halfsteps * pitches_per_halfstep
midi_notes = np.linspace(36, 96, n_pitches, endpoint=False)
print midi_notes
n_notes = int(duration_seconds * notes_per_second)
for i in range(n_notes):
print '\t', i, 'of', n_notes
midi_note = np.random.choice(midi_notes)
note = marimba.get_note(midi_note)
start = np.random.randint(max_start)
audio.add(start, note)
audio.write_wav('et-experiment')
print 'Done running et_experiment.'
def different_sections_multiple_2():
func_name = 'different_sections_multiple_2'
print 'Running {}...'.format(func_name)
marimba = Marimba()
audio_duration_seconds = 240
audio = Audio(audio_duration_seconds)
harmonies = Sections(32, len(audio))
for i, harmony in enumerate(harmonies):
if i % 2:
harmony.harmony = [0, 4, 7]
else:
harmony.harmony = [5, 9, 0]
n_density_sections = 121
densities = Sections(n_density_sections, len(audio))
density_values = np.linspace(4, 100, 121)
for section, value in zip(densities, density_values):
section.density = value
n_register_sections = 96 - 65
low = 58
high = 65
register_sections = Sections(n_register_sections, len(audio))
for section in register_sections:
section.low = low
section.high = high
section.register = range(low, high)
low = max([36, low - 1])
high = min([96, high + 1])
max_start = len(audio) - 80000
print 'max_start', max_start, 'densities[-1].start', densities[-1].start
for density_section in densities:
for i in range(int(density_section.density)):
start = np.random.randint(
density_section.start,
min([density_section.next_start, max_start]))
register_section = register_sections.get_by_sample_offset(start)
harmony_section = harmonies.get_by_sample_offset(start)
pitch_options = [
p for p in register_section.register
if p % 12 in harmony_section.harmony
]
pitch = np.random.choice(pitch_options)
note = marimba.get_note(pitch)
audio.add(start, note)
audio.write_wav(func_name)
print 'Done running {}.'.format(func_name)
def sections():
print 'Running sections...'
marimba = Marimba()
quarter_duration_in_seconds = 1.0
beats_per_section = 2.0
section_duration_seconds = beats_per_section * quarter_duration_in_seconds
n_sections = 64
audio = Audio(int(section_duration_seconds * n_sections) + 3)
section_duration_samples = int(
round(section_duration_seconds * audio.sample_rate))
chords = []
for _ in range(n_sections):
root = np.random.choice(np.linspace(0, 12, 24, endpoint=False))
chord_type = random.choice([
[0, 2.5, 5, 7, 9.5],
[0, 2.5, 7, 9.5],
[0, 3.5, 7, 10.5],
[0, 4.5, 7],
])
chord = [(p + root) % 12 for p in chord_type]
chords.append(chord)
start = 0
for section_number in range(n_sections):
chord = chords[section_number]
lowest = 50.0
highest = 86.0
pitches = [
p for p in np.linspace(
lowest, highest, (highest - lowest) * 100, endpoint=False)
if p % 12 in chord
]
end = start + section_duration_samples
for _ in range(int(beats_per_section *
random.choice([1, 2, 4, 8, 16]))):
note_start = np.random.randint(start, end - 5000)
midi_note = np.random.choice(pitches)
note = marimba.get_note(midi_note)
audio.add(note_start, note)
start += section_duration_samples
audio.write_wav('sections')
print 'Done running sections.'
def random_notes():
"""Chose a random note every 6250 samples"""
marimba = Marimba()
audio = Audio(30)
len_audio = len(audio) - 50000
tick = 0
while tick < len_audio:
note = marimba.get_random_note()
audio.add(tick, note)
tick += 6250
audio.write_wav('samples-test')
def diaphonic_trio_piano_two_sections():
func_name = 'dissonant_counterpoint_experiment'
print 'Running {}...'.format(func_name)
marimba = Marimba()
audio_duration_seconds = 120
audio = Audio(audio_duration_seconds)
odd_harmonics_scale, harmonics = get_odd_harmonics_scale(root=0)
odd_harmonics_scale_pitch_options = [
round(p, 2)
for p in np.linspace(36, 96, (96 - 36) * 100, endpoint=False)
if round(p % 12, 2) in odd_harmonics_scale
]
harmonics = [
round((ratio_to_cents(h, 1, round_decimal_places=None) + 3600) / 100,
2) for h in range(1, 25)
]
max_start = len(audio) - 100000
start_options = [
int(s)
for s in np.linspace(0, int(max_start / 2), audio_duration_seconds * 3)
]
for _ in range(len(start_options) * 2):
start = np.random.choice(start_options)
midi_number = np.random.choice(odd_harmonics_scale_pitch_options)
note = marimba.get_note(midi_number)
audio.add(start,
note,
pan=np.random.random(),
amplify=np.random.choice(np.linspace(.3, 1.3)))
start_options = [
int(s)
for s in np.linspace(int(max_start /
2), max_start, audio_duration_seconds * 4)
]
for _ in range(len(start_options) * 3):
start = np.random.choice(start_options)
midi_number = np.random.choice(harmonics)
note = marimba.get_note(midi_number)
audio.add(start,
note,
pan=np.random.random(),
amplify=np.random.choice(np.linspace(.3, 1.3)))
audio.write_wav(func_name)
print 'Done running {}.'.format(func_name)
class Utah2018(object):
def __init__(self, version):
self.version = version
self.duration_seconds = 200
self.setup()
# self.planning()
self.go()
self.closeout()
def setup(self):
self.base_name = 'Utah2018'
self.output_parent_dir = 'output/{}'.format(self.base_name)
self.name = '{}-{}'.format(self.base_name, self.version)
print '\nRunning {}...'.format(self.name)
self.marimba = Marimba()
self.audio = Audio(self.duration_seconds + 5)
self.len_audio = len(self.audio) - (44100 * 5)
def closeout(self):
self.audio.write_wav(self.name,
output_parent_dir=self.output_parent_dir)
print 'Done running {}.\n'.format(self.name)
def go(self):
self.meter = Meter(self.duration_seconds, bpm=80)
# Make a random scale
options = range(12)
scale = []
for _ in range(7):
pc = np.random.choice(options)
options.remove(pc)
scale.append(pc)
scale.sort()
print scale
pitch = np.random.randint(62, 76)
for sixteenth in self.meter.layers_by_name['sixteenth']:
if np.random.random() < .8:
# Rest every 10 or so notes
pitch_options = range(max([pitch - 5, 56]),
min([pitch + 6, 88]))
pitch_options.remove(pitch)
pitch_options = [p for p in pitch_options if p % 12 in scale]
pitch = np.random.choice(pitch_options)
note = self.marimba.get_note(pitch)
self.audio.add(sixteenth.start_samples, note)
def random_notes_2():
"""Choose 100 random notes and put them in random locations throughout the duration of the audio containing the original samples"""
marimba = Marimba()
audio = Audio(30)
len_audio = len(audio) - 50000
n_notes = 100
for i in range(n_notes):
print '\t', i, 'of', n_notes
note = marimba.get_random_note()
start = np.random.randint(len_audio)
audio.add(start, note)
audio.write_wav('samples-test')
def main():
marimba = Marimba()
audio_duration_seconds = 120
audio = Audio(audio_duration_seconds)
piano_harmonies = PianoHarmonies(audio)
max_start = len(audio) - 80000
n_notes = audio_duration_seconds * 3
for _ in range(n_notes):
start = np.random.randint(0, max_start)
scale = piano_harmonies.get_at_sample_offset(start)
midi_number = np.random.choice(scale)
note = marimba.get_note(midi_number)
audio.add(start, note)
def common_tone_chord_experiment(pitches_per_halfstep=3, duration_seconds=60):
print 'Running common_tone_chord_experiment...'
marimba = Marimba()
audio = Audio(duration_seconds)
max_start = len(audio) - 100000
min_note = 36.0
max_note = 96.0
n_halfsteps = max_note - min_note
n_pitches = n_halfsteps * pitches_per_halfstep
midi_notes = list(np.linspace(36, 96, n_pitches, endpoint=False))
chord = [np.random.choice(midi_notes) for _ in range(4)]
chord.sort()
width = (pitches_per_halfstep * 2) - 1
tick = 0
while tick < max_start:
print chord
n_notes_to_change = np.random.choice([1, 1, 2])
notes_to_change = random.sample(chord, n_notes_to_change)
for midi_note in notes_to_change:
index_in_chord = chord.index(midi_note)
index_in_midi_notes = midi_notes.index(midi_note)
lowest = max(index_in_midi_notes - width, 0)
highest = min(index_in_midi_notes + width, len(midi_notes) - 1)
new_index_in_midi_notes = np.random.choice(range(lowest, highest))
midi_note = midi_notes[new_index_in_midi_notes]
chord[index_in_chord] = midi_note
for midi_note in chord:
note = marimba.get_note(midi_note)
tick += int(audio.sample_rate * 0.08)
audio.add(tick, note)
tick += int(round((audio.sample_rate * 0.85)))
audio.write_wav('common-tone-chords')
print 'Done running common_tone_chord_experiment.'
def microtonal_experiment_1():
print 'Running microtonal_experiment_1...'
marimba = Marimba()
audio = Audio(30)
# the marimba recordings have a duration of 50000 samples.
# Don't start a recording within 50000 samples of the end of the audio
len_audio = len(audio) - 50000
print len_audio
n_notes = 100
for i in range(n_notes):
print '\t', i, 'of', n_notes
note = marimba.get_random_note(cents=True)
start = np.random.randint(len_audio)
audio.add(start, note)
audio.write_wav('samples-test')
print 'Done running microtonal_experiment_1.'
def block_chord_experiment(pitches_per_halfstep=3, duration_seconds=60):
print 'Running block_chord_experiment...'
marimba = Marimba()
audio = Audio(duration_seconds)
max_start = len(audio) - 50000
min_note = 36.0
max_note = 96.0
n_halfsteps = max_note - min_note
n_pitches = n_halfsteps * pitches_per_halfstep
midi_notes = np.linspace(36, 96, n_pitches, endpoint=False)
tick = 0
while tick < max_start:
for _ in range(3):
midi_note = np.random.choice(midi_notes)
note = marimba.get_note(midi_note)
audio.add(tick, note)
tick += int(round((audio.sample_rate * 0.85)))
audio.write_wav('block-chords')
print 'Done running block_chord_experiment.'
def dissonant_counterpoint_experiment():
func_name = 'dissonant_counterpoint_experiment'
print 'Running {}...'.format(func_name)
marimba = Marimba()
n_beats = 120
quarter_duration_in_seconds = .5
audio_duration = int(n_beats * quarter_duration_in_seconds) + 3
audio = Audio(audio_duration)
beat_duration = int(quarter_duration_in_seconds * audio.sample_rate)
dissonant_counterpoint_generator = dissonant_counterpoint(range(12),
skip=2)
pitch_classes = [
dissonant_counterpoint_generator.next() for _ in range(n_beats)
]
start = 0
for i, pc in enumerate(pitch_classes):
if np.random.random() < .8:
new_note_duration = np.random.choice(np.linspace(3000, 50000, 100))
note = marimba.get_staccato_note(
pc + 60, new_note_duration=new_note_duration)
else:
note = marimba.get_note(pc + 60)
audio.add(start,
note,
amplify=np.random.choice(np.linspace(.2, 1.5, 10)),
pan=np.random.random())
start += beat_duration
audio.write_wav(func_name)
print 'Done running {}.'.format(func_name)
class AnthonyDouglass(object):
def __init__(self, add_microbeats=False):
self.add_microbeats = add_microbeats
self.fib = self.fibonacci()
self.setup_rhythm()
self.setup()
self.go()
self.closeout()
def setup_rhythm(self):
self.bpm = 90.0
self.quarter_duration = 60.0 / self.bpm
self.bar_duration = self.quarter_duration * 4
self.n_repetitions_per_pattern = 4
self.n_patterns = 12
count_in_duration = self.quarter_duration * 8
self.duration_seconds = count_in_duration + (self.bar_duration * 8 *
self.n_patterns)
def setup(self):
self.name = 'AnthonyDouglass'
print '\nRunning {}...'.format(self.name)
self.marimba = Marimba()
self.end_padding_seconds = 5
self.audio = Audio(self.duration_seconds + self.end_padding_seconds)
self.len_audio = len(
self.audio) - (self.audio.sample_rate * self.end_padding_seconds)
def closeout(self):
self.audio.write_wav(self.name)
print 'Done running {}.\n'.format(self.name)
def fibonacci(self):
# Fibonacci numbers
a = 1
b = 2
while True:
yield a, b
a, b = b, a + b
def add_pattern(self, start, a, b):
original_start = start
pattern = [b, b, a]
microbeats_in_pattern = sum(pattern)
microbeat_duration = self.bar_duration / microbeats_in_pattern
n_bars = 4
rhythm = [d * microbeat_duration for d in pattern * n_bars]
pitches = ([0, 4, 7] * 2) + ([5, 9, 12] * 2)
for rhythm_index, duration in enumerate(rhythm):
pitch = pitches[rhythm_index % len(pitches)]
note = self.marimba.get_note(pitch + 60)
self.audio.add(seconds_to_samples(start), note)
start += duration
next_start = start
if self.add_microbeats:
micro_start = original_start
microbeats = [microbeat_duration] * microbeats_in_pattern * n_bars
for duration in microbeats:
note = self.marimba.get_note(48)
self.audio.add(seconds_to_samples(micro_start),
note,
amplify=.15)
micro_start += microbeat_duration
return next_start
def pulse(self):
start = 0
half_duration = self.quarter_duration * 2
n_pulses = int(self.duration_seconds / half_duration)
for _ in range(n_pulses):
self.audio.add(seconds_to_samples(start),
self.marimba.get_note(84))
start += half_duration
def go(self):
self.pulse()
print 'count in'
next_start = self.quarter_duration * 8
for _ in range(self.n_patterns):
print
# Add base pattern
print 3, 3, 2
next_start = self.add_pattern(next_start, 2, 3)
a, b = self.fib.next()
print b, b, a
next_start = self.add_pattern(next_start, a, b)
class MusicWithSections(object):
def __init__(self):
self.duration_seconds = 240
self.setup()
self.setup_harmony_sections()
self.setup_density_sections()
self.setup_register_sections()
self.go()
self.closeout()
def setup(self):
self.name = 'MusicWithSections'
print 'Running {}...'.format(self.name)
self.marimba = Marimba()
self.audio = Audio(self.duration_seconds)
self.len_audio = len(self.audio)
def closeout(self):
self.audio.write_wav(self.name)
print 'Done running {}.'.format(self.name)
def setup_harmony_sections(self):
harmony_sections = [3, 1] * 16
self.harmony_sections = Sections(harmony_sections, self.len_audio)
for i, harmony in enumerate(self.harmony_sections):
if i % 2:
harmony.harmony = [0, 4, 7]
else:
harmony.harmony = [5, 9, 0]
def setup_density_sections(self):
n_density_sections = 121
self.density_sections = Sections(n_density_sections, self.len_audio)
density_values = np.linspace(4, 100, 121)
for section, value in zip(self.density_sections, density_values):
section.density = value
def setup_register_sections(self):
n_register_sections = 96 - 65
low = 58
high = 65
self.register_sections = Sections(n_register_sections, self.len_audio)
for section in self.register_sections:
section.low = low
section.high = high
section.register = range(low, high)
low = max([36, low - 1])
high = min([96, high + 1])
def go(self):
max_start = len(self.audio) - 80000
for density_section in self.density_sections:
for i in range(int(density_section.density)):
start = np.random.randint(
density_section.start,
min([density_section.next_start, max_start]))
register_section = self.register_sections.get_by_sample_offset(
start)
harmony_section = self.harmony_sections.get_by_sample_offset(
start)
pitch_options = [
p for p in register_section.register
if p % 12 in harmony_section.harmony
]
pitch = np.random.choice(pitch_options)
note = self.marimba.get_note(pitch)
self.audio.add(start, note)
def overlapping_sections():
func_name = 'overlapping_sections'
print 'Running {}...'.format(func_name)
marimba = Marimba()
quarter_duration_in_seconds = 1.0
beats_per_harmony_section = 2.0
beats_per_density_section = 1.7777
n_beats = beats_per_harmony_section * beats_per_density_section * 32
duration_in_seconds = int(n_beats * quarter_duration_in_seconds + 3)
audio = Audio(duration_in_seconds)
harmony_section_duration_samples = int(
round((beats_per_harmony_section * quarter_duration_in_seconds) *
audio.sample_rate))
start = 0
harmony_section_starts = []
while start < len(audio):
harmony_section_starts.append(start)
start += harmony_section_duration_samples
density_section_duration_samples = int(
round((beats_per_harmony_section * quarter_duration_in_seconds) *
audio.sample_rate))
start = 0
density_section_starts = []
while start < len(audio):
density_section_starts.append(start)
start += density_section_duration_samples
max_start = len(audio) - 500000
chords = [[0, 4, 7], [0, 5, 9], [0, 4, 7], [0, 5, 9], [0, 4, 7], [0, 5, 9],
[2, 5, 9, 0], [2, 5, 7, 10]]
lowest = 59
highest = 62
density_section_starts = [
s for s in density_section_starts if s < max_start
]
len_density_section_starts = len(density_section_starts)
densities = np.linspace(1, 70, len_density_section_starts)
for density, section_start in zip(densities, density_section_starts):
for _ in range(int(density)):
start = np.random.randint(
section_start,
section_start + density_section_duration_samples)
for tick, next_tick in zip(harmony_section_starts[:-1],
harmony_section_starts[1:]):
if tick <= start < next_tick:
break
chord_index = harmony_section_starts.index(tick) % len(chords)
chord_type = chords[chord_index]
# pitch = random.choice([p for p in range(lowest, highest) if p % 12 in chord_type])
pitch = random.choice([
p for p in np.linspace(
lowest, highest, (highest - lowest) * 100, endpoint=False)
if round(p % 12, 2) in chord_type
])
note = marimba.get_note(pitch)
audio.add(start, note)
if random.random() < .3:
lowest = max([36, lowest - 1])
if random.random() < .6:
highest = min([95, highest + 1])
# Future TODO
# - at one rate, increase density
# - at another rate, increase register
# - at another rate, move from staccatto to sustained
# - at another rate, do something else
# - etc
audio.write_wav(func_name)
print 'Done running {}.'.format(func_name)
def overlapping_sections_with_weird_modulation():
func_name = 'overlapping_sections_with_weird_modulation'
print 'Running {}...'.format(func_name)
marimba = Marimba()
quarter_duration_in_seconds = 1.0
beats_per_harmony_section = 2.0
beats_per_density_section = 1.7777
n_beats = beats_per_harmony_section * beats_per_density_section * 32
duration_in_seconds = int(n_beats * quarter_duration_in_seconds + 3)
audio = Audio(duration_in_seconds)
harmony_section_duration_samples = int(
round((beats_per_harmony_section * quarter_duration_in_seconds) *
audio.sample_rate))
start = 0
harmony_section_starts = []
while start < len(audio):
harmony_section_starts.append(start)
start += harmony_section_duration_samples
density_section_duration_samples = int(
round((beats_per_harmony_section * quarter_duration_in_seconds) *
audio.sample_rate))
start = 0
density_section_starts = []
while start < len(audio):
density_section_starts.append(start)
start += density_section_duration_samples
max_start = len(audio) - 500000
chords = [[0, 4, 7], [0, 5, 9], [0, 4, 7], [0, 5, 9], [0, 4, 7], [0, 5, 9],
[2, 5, 9, 0], [2, 5, 7, 10]]
lowest = 59
highest = 62
density_section_starts = [
s for s in density_section_starts if s < max_start
]
len_density_section_starts = len(density_section_starts)
densities = np.linspace(1, 70, len_density_section_starts)
halfstep_steps = np.linspace(0, 1, len_density_section_starts, -10)
halfstep_steps = list(halfstep_steps)
halfstep_steps += [1.0] * 10
i = 0
for density, section_start in zip(densities, density_section_starts):
coords = [
(1, 1),
(3, 1),
(5, 1),
(6, 1),
(7, 1),
]
for x, y in coords:
chords[x][y] = round(4.0 + (1 - halfstep_steps[i]), 2)
coords = [
(0, 1),
(2, 1),
(4, 1),
]
for x, y in coords:
chords[x][y] = round(5.0 - (1 - halfstep_steps[i]), 2)
i += 1
for _ in range(int(density)):
start = np.random.randint(
section_start,
section_start + density_section_duration_samples)
for tick, next_tick in zip(harmony_section_starts[:-1],
harmony_section_starts[1:]):
if tick <= start < next_tick:
break
chord_index = harmony_section_starts.index(tick) % len(chords)
chord_type = chords[chord_index]
pitch = random.choice([
p for p in np.linspace(
lowest, highest, (highest - lowest) * 100, endpoint=False)
if round(p % 12, 2) in chord_type
])
note = marimba.get_note(pitch)
audio.add(start, note)
if random.random() < .3:
lowest = max([36, lowest - 1])
if random.random() < .6:
highest = min([95, highest + 1])
audio.write_wav(func_name)
print 'Done running {}.'.format(func_name)
class Polyrhythm20_21(object):
def __init__(self):
self.setup_rhythm()
self.setup()
self.go()
self.closeout()
def setup_rhythm(self):
self.bpm = 120.0
self.quarter_duration = 60.0 / self.bpm
self.eighth_duration = self.quarter_duration / 2.0
self.triplet_duration = self.quarter_duration / 3.0
self.sixteenth_duration = self.quarter_duration / 4.0
self.n_repetitions = 4
self.rhythm1 = [
self.quarter_duration, self.quarter_duration,
self.quarter_duration + self.eighth_duration
] * 20 * self.n_repetitions
self.rhythm2 = [
self.quarter_duration, self.quarter_duration,
self.quarter_duration + self.triplet_duration
] * 21 * self.n_repetitions
self.rhythms = [self.rhythm1, self.rhythm2]
self.duration_seconds = sum(self.rhythm1)
n_quarters = int(round(self.duration_seconds / self.quarter_duration))
self.pulse = [self.quarter_duration] * n_quarters
def setup(self):
self.name = 'Polyrhythm20_21'
print '\nRunning {}...'.format(self.name)
self.marimba = Marimba()
self.end_padding_seconds = 5
self.audio = Audio(self.duration_seconds + self.end_padding_seconds)
self.len_audio = len(
self.audio) - (self.audio.sample_rate * self.end_padding_seconds)
def closeout(self):
self.audio.write_wav(self.name)
print 'Done running {}.\n'.format(self.name)
def go(self):
for i, rhythm in enumerate(self.rhythms):
start = 0
for duration in rhythm:
if i == 0:
pitch = 65
else:
pitch = 68
note = self.marimba.get_note(pitch)
print start
self.audio.add(seconds_to_samples(start), note, pan=i)
start += duration
start = 0
for i, duration in enumerate(self.pulse):
amplify = .7
if i % 2:
amplify = .1
self.audio.add(seconds_to_samples(start),
self.marimba.get_note(49),
amplify=amplify)
start += duration
