def build_randomly_from_scale(root,
octave,
scale_name="major",
num_note_choices=None):
"""Create a MidiChord object based on a given scale.
:param root: the root note of the scale
:param octave: the octave to be used when creating the chord
:param scale_name: the scale name to be used
:param num_note_choices: a list of how integers representing the number of notes allowed to be chosen at random
when constructing the chord randomly. None will default to [3, 4, 5].
:return: a MidiChord
"""
if num_note_choices is None:
num_note_choices = [3, 4, 5]
named_scale = scale.NAMED_SCALES[scale_name]
my_scale = Scale(Note((root.upper(), octave)), named_scale)
num_notes_in_scale = len(my_scale)
scale_start_num = octave * num_notes_in_scale
num_notes_in_chord = np.random.choice(num_note_choices)
possible_notes = [
my_scale.get(temp_note)
for temp_note in range(scale_start_num, scale_start_num +
num_notes_in_scale * 2)
]
notes = np.random.choice(possible_notes,
size=num_notes_in_chord,
replace=False)
chord = MidiChord([note.note + str(note.octave) for note in notes])
chord.build_chord()
return chord
def build_from_intervals(self,
root,
octave,
intervals,
scale_name="major"):
"""Given chord specs return a MidiChord object of said chord.
usage:
chord = ChordBuilder().build_from_intervals('c', 6, ["1", "3", "5", "b7", "#9"])
:param root: string of the note.
:param octave: an integer between 0 and 8 (or 9 or something)
:param intervals: a list of note intervals relative to the root. Use 'b' for flat and '#' for sharp.
:param scale_name: the scale from which to select notes
:return: a Chord object
"""
named_scale = scale.NAMED_SCALES[scale_name]
my_scale = Scale(Note((root.upper(), octave)), named_scale)
num_notes_in_scale = len(my_scale)
# TODO: is this the correct way to calculate the scale_start_num?
scale_start_num = octave * num_notes_in_scale
intervals = [
self._deal_with_pitch_accidentals(interval)
for interval in intervals
]
notes = [
my_scale.get(scale_start_num + interval[0] - 1).transpose(
interval[1]) for interval in intervals
]
chord = MidiChord([note.note + str(note.octave) for note in notes])
chord.build_chord()
return chord
def __init__(self, event):
Thread.__init__(self)
# Define "stop" trigger
self.stopped = event
# Define key
self.key = Note('C3')
# Define scale
self.scale = Scale(self.key, 'harmonic minor')
self.note = self.key
self.chunks = []
self.chunks.append(source.sawtooth(self.note, 0.5))
self.data = numpy.concatenate(self.chunks)
self.data = self.data * 0.5
class sinePlayer(Thread):
def __init__(self, event):
Thread.__init__(self)
# Define "stop" trigger
self.stopped = event
# Define key
self.key = Note('C3')
# Define scale
self.scale = Scale(self.key, 'harmonic minor')
self.note = self.key
self.chunks = []
self.chunks.append(source.sawtooth(self.note, 0.5))
self.data = numpy.concatenate(self.chunks)
self.data = self.data * 0.5
# Adjust audio by x steps in scale defined above
def adjustAudio(self, adjustment, loudness):
self.note = self.scale.transpose(self.key, adjustment)
self.chunks = []
self.chunks.append(source.sawtooth(self.note, .5))
self.data_adjusted = numpy.concatenate(self.chunks)
self.data_adjusted = self.data_adjusted * 0.5 * loudness
self.data = self.data_adjusted
# Runs indefinitely until passed "stop" trigger
def run(self):
while not self.stopped.wait(0.001):
playback.play(self.data)
def generate_song(
notes_per_chord,
num_repeats,
note_time=0.25,
prog_intervals=(7, 2, -4j, 5)
):
# generate a random major key
root = Note(rand.choice(Note.NOTES))
scale_notes = Scale(root, 'major')
octave = 3
progression = Chord.progression(
Scale(
root,
[int(p.real + p.imag) for p in prog_intervals]
),
octave
)
for i, z in enumerate(prog_intervals):
if z.imag != 0:
# TODO: cannot have a repeated chord be minor
progression[i] = major_to_minor(progression[i])
# generates a melody for the progression
low_octave = 4
prev_note = rand.choice(list(scale_notes)).at_octave(low_octave)
melody = []
for _ in range(notes_per_chord * len(progression) * num_repeats):
note_dist = int(round(rand.gauss(0, 2)))
prev_note = scale_notes.transpose(prev_note, note_dist)
melody.append(prev_note)
# build up the HLR from the melody progression
song = []
t = 0
for i in range(num_repeats):
for chord in progression:
song.append(
(t*note_time, chord, note_time*notes_per_chord)
)
t += notes_per_chord
for i in range(len(melody)):
note = melody[i]
song.append((i*note_time, Chord([note]), note_time))
return song
class Melody:
def __init__(self,
root_note=None,
octave=None,
scale_name=None,
melody_len=None,
quantization=None,
note_density=None,
note_len_choices=None):
self.root_note = root_note
self.octave = octave
self.scale_name = scale_name
self.melody_len = melody_len
self.quantization = quantization # this maybe should be at note level only
self.note_density = note_density # proportion of available ticks (determined by quantization) occupied by notes
self.note_len_choices = note_len_choices
self.root = Note((self.root_note, self.octave))
self.named_scale = scale.NAMED_SCALES[self.scale_name]
self.scale = Scale(self.root, self.named_scale)
self.available_notes = [self.scale.get(x) for x in range(21, 30)]
self.number_of_notes = self._compute_num_notes()
self.start_ticks = self._get_start_ticks()
def _compute_num_notes(self):
return int(self.melody_len * self.note_density /
float(self.quantization))
def _get_start_ticks(self):
return np.unique(
sorted([
Rhythm().find_nearest_note(random.randint(0, self.melody_len),
self.quantization)
for _ in range(self.number_of_notes)
]))
def _create_melody_note_tuple(self, start_tick):
velocity = random.randint(50, 90)
cur_note = random.choice(self.available_notes)
cur_note = Note.index_from_string(cur_note.note + str(cur_note.octave))
note_length = random.choice(self.note_len_choices)
# ["event_type_fun", "tick", "duration", "pitch", "velocity"]
return [
MidiEventStager(midi.NoteOnEvent, start_tick, note_length,
cur_note, velocity),
MidiEventStager(midi.NoteOffEvent, start_tick + note_length,
note_length, cur_note, 0)
]
def create_melody(self):
melody_notes = []
for tick in self.start_ticks:
melody_tuples = self._create_melody_note_tuple(tick)
melody_notes.extend(melody_tuples)
return melody_notes
def __init__(self,
root_note=None,
octave=None,
scale_name=None,
melody_len=None,
quantization=None,
note_density=None,
note_len_choices=None):
self.root_note = root_note
self.octave = octave
self.scale_name = scale_name
self.melody_len = melody_len
self.quantization = quantization # this maybe should be at note level only
self.note_density = note_density # proportion of available ticks (determined by quantization) occupied by notes
self.note_len_choices = note_len_choices
self.root = Note((self.root_note, self.octave))
self.named_scale = scale.NAMED_SCALES[self.scale_name]
self.scale = Scale(self.root, self.named_scale)
self.available_notes = [self.scale.get(x) for x in range(21, 30)]
self.number_of_notes = self._compute_num_notes()
self.start_ticks = self._get_start_ticks()
# Set random seed + filepath from command line
random_seed = "0"
if len(argv) >= 2:
random_seed = argv[1]
seed(random_seed)
filepath = "public/generated_songs/song_" + random_seed + ".wav"
if len(argv) > 2:
filepath = argv[2]
# Define key and scale
random_note = choice(Note.NOTES)
key = Note(random_note + '3')
# scale = Scale(key, choice([l for l in list(NAMED_SCALES.values()) if len(l) == 7]))
scale = Scale(key, uniform(0, 1) > 0.3 and 'major' or 'minor')
# Grab key_chords chords from scale starting at the octave of our key
key_chords = Chord.progression(scale, base_octave=key.octave)
time = 0.0 # Keep track of currect note placement time in seconds
rhythm_mod = uniform(0.5, 1.5) # lower number = faster tempo
print("rhythm_mod = " + str(rhythm_mod))
timeline = Timeline()
def render_melody(rhythm, melody):
global time
print("r = " + str(rhythm))
import random
from musical.theory import Note, Scale
from musical.audio import effect, playback
from timeline import Hit, Timeline
# Define key and scale
key = Note('E3')
scale = Scale(key, 'harmonic minor')
time = 0.0 # Keep track of currect note placement time in seconds
timeline = Timeline()
note = key
# Semi-randomly queue notes from the scale
for i in range(64):
if note.index > 50 or note.index < 24:
# If note goes out of comfort zone, randomly place back at base octave
note = scale.get(random.randrange(4) * 2)
note = note.at_octave(key.octave)
else:
# Transpose the note by some small random interval
note = scale.transpose(note, random.choice((-2, -1, 1, 2)))
length = random.choice((0.125, 0.125, 0.25))
timeline.add(time, Hit(note, length + 0.125))
time += length
# Resolve
from musical.theory import Note, Scale, Chord
from musical.audio import playback
from timeline import Hit, Timeline
# Define key and scale
key = Note('D3')
scale = Scale(key, 'minor')
# Grab progression chords from scale starting at the octave of our key
progression = Chord.progression(scale, base_octave=key.octave)
time = 0.0 # Keep track of currect note placement time in seconds
timeline = Timeline()
# Add progression to timeline by arpeggiating chords from the progression
# for index in [0, 2, 3, 1, 0, 2, 3, 4, 5, 4, 0]:
# chord = progression[index]
# root, third, fifth = chord.notes
# arpeggio = [root, third, fifth, third, root, third, fifth, third]
# for i, interval in enumerate(arpeggio):
# ts = float(i * 2) / len(arpeggio)
# timeline.add(time + ts, Hit(interval, 1.0))
# time += 2.0
# Strum out root chord to finish
note = Note('D3')
if note.note == "d":
print(note)
data = note_data
for i in xrange(ECHO_TIMES):
factor *= ECHO_DECAY
data = numpy.append(data, note_data * factor)
fname = "out/%s%d.wav" % (note.note, note.octave)
save.save_wave(data, fname)
return fname
if os.path.exists("out"):
shutil.rmtree("out")
os.mkdir("out")
root = Note(ROOT)
scale = Scale(root, SCALE)
notes = [None] * NUM_NOTES
mid = NUM_NOTES / 2
notes[mid] = root
for i in range(mid):
notes[i] = scale.transpose(root, i - mid)
for i in range(mid + 1, NUM_NOTES):
notes[i] = scale.transpose(root, i - mid)
files = []
for note in notes:
import numpy
from musical.theory import Note, Scale
from musical.audio import source, playback
# Define key and scale
key = Note('C4')
scale = Scale(key, 'major')
note = key
chunks = []
for i in xrange(len(scale)):
third = scale.transpose(note, 2)
chunks.append(source.sine(note, 0.5) + source.square(third, 0.5))
note = scale.transpose(note, 1)
fifth = scale.transpose(key, 4)
chunks.append(source.sine(key, 1.5) + source.square(fifth, 1.5))
print "Rendering audio..."
data = numpy.concatenate(chunks)
# Reduce volume to 50%
data = data * 0.5
print "Playing audio..."
playback.play(data)
print "Done!"
import numpy
from musical.theory import Note, Scale
from musical.audio import source, playback
# Define key and scale
key = Note('C4')
scale = Scale(key, 'major')
note = key
chunks = []
for i in xrange(len(scale)):
third = scale.transpose(note, 2)
chunks.append(source.sine(note, 0.5) + source.square(third, 0.5))
note = scale.transpose(note, 1)
fifth = scale.transpose(key, 4)
chunks.append(source.sine(key, 1.5) + source.square(fifth, 1.5))
print "Rendering audio..."
data = numpy.concatenate(chunks)
# Reduce volume to 50%
data = data * 0.5
print "Playing audio..."
playback.play(data)
print "Done!"
import random
from musical.theory import Note, Scale
from musical.audio import effect, playback
from timeline import Hit, Timeline
# Define key and scale
key = Note('C3')
scale = Scale(key, 'Major')
time = 0.0 # Keep track of currect note placement time in seconds
timeline = Timeline()
note = key
for x in xrange(0, 12):
if note.index == "C3":
note = random.choice(C3, D3)
if note.index == "D3":
note = random.choice(D3, E3, C3)
if note.index == "E3":
note = random.choice(E3, F3, D3)
if note.index == "F3":
note = random.choice(F3, G3, E3)
debug = False
bassArray = []
chordLetters = {
"c" : ["c","e","g"],
"d" : ["d","f","a"],
"e" : ["e","g","b"],
"f" : ["f","a","c"],
"g" : ["g","b","d"],
"a" : ["a","c","e"],
"b" : ["b","d","f"]
}
key = Note("C3")
scale = Scale(key, 'major')
def returnChord(note):
return([scale.transpose(note,2),scale.transpose(note,0)])
def nextNote(prevNote, bassNote):
#if 'c' chordNotes is set to [Note("C3"),Note("E3"),Note("G3")]
chordNotes = chordLetters[bassNote.note]
print(chordNotes
)
possibleNext = []
possibleNext.append(scale.transpose(prevNote,1))
possibleNext.append(scale.transpose(prevNote,-1))
from musical.theory import Note, Scale, Chord
# generate a random major key
root = Note('c')
scale = Scale(root, 'major')
# generate a I-V-vi-IV progression
progression = Chord.progression(Scale(root, (7, 2, -4, -5)), 3)
for chord in progression:
print chord
def main(argv):
try:
opts, args = getopt.getopt(argv, "hdsm", ['help', 'debug', 'startup', 'morning'])
except getopt.GetoptError:
usage()
sys.exit(2)
global _debug
_debug = 0
morning = False
for opt, arg in opts:
if opt in ("-h", "--help"):
usage()
sys.exit()
if opt in ("-m", "--morning"):
morning = True
_debug = 1
if opt == '-d':
_debug = 1
if opt in ("-s", "--startup"):
import time
time.sleep(90)
#os.system("/usr/bin/tvservice -o")
# Increase chance of singing at sunrise/sunset
import ephem
birdcage = ephem.Observer()
birdcage.lat = '51.497517'
birdcage.lon = '0.080380'
birdcage.date = str(datetime.datetime.now())
birdcage.elevation = 5
sun = ephem.Sun()
next_sunrise = birdcage.next_rising(sun)
early_next_sunrise = ephem.Date(next_sunrise - 15 * ephem.minute)
late_next_sunrise = ephem.Date(next_sunrise + 15 * ephem.minute)
next_sunset = birdcage.next_setting(sun)
early_next_sunset = ephem.Date(next_sunset - 15 * ephem.minute)
late_next_sunset = ephem.Date(next_sunset + 15 * ephem.minute)
sunrise = False;
sunset = False;
if (birdcage.date > early_next_sunrise and birdcage.date < late_next_sunrise):
#print 'Sunrise roll'
sunrise = true;
dice_roll = random.choice([1,2,3,4,5,6,7,8])
elif (birdcage.date > early_next_sunset and birdcage.date < late_next_sunset):
#print 'Sunset roll'
sunset = true;
dice_roll = random.choice([1,2,3,4,5,6,7,8])
else:
dice_roll = random.choice([1,2,3,4,5,6])
if (dice_roll < 5 and _debug <> 1):
#print "Going back to sleep"
sys.exit()
# We're alive, import what else we need now
sys.path.append(os.path.join(os.path.dirname(__file__), 'python-musical'))
from musical.theory import Note, Scale, Chord
from musical.audio import effect, playback
from timeline import Hit, Timeline
# Define key and scale
key = Note((random.choice(Note.NOTES), random.choice([2,3,3])))
scales = ['major', 'minor', 'melodicminor', 'harmonicminor', 'pentatonicmajor', 'bluesmajor', 'pentatonicminor', 'bluesminor', 'augmented', 'diminished', 'wholehalf', 'halfwhole', 'augmentedfifth', 'japanese', 'oriental', 'ionian', 'phrygian', 'lydian', 'mixolydian', 'aeolian', 'locrian']
random.shuffle(scales)
scale = Scale(key, random.choice(scales))
#print key
#print scale
# Grab progression chords from scale starting at the octave of our key
progression = Chord.progression(scale, base_octave=key.octave)
time = 0.0 # Keep track of correct note placement time in seconds
timeline = Timeline()
# Pick a notes from a chord randomly chosen from a list of notes in this progression
chord = progression[ random.choice(range(len(progression)-1)) ]
notes = chord.notes
melodies = [
[0.8, 0.2],
[0.4, 0.2],
[0.2, 0.8],
[0.2, 0.4],
[0.6, 0.2],
[0.4, 0.4, 0.2],
[0.6, 0.1, 0.1],
[0.8, 0.1, 0.2],
[0.2, 0.2, 0.2],
[0.2, 0.4, 0.2],
[1.0, 0.1, 0.2, 0.1, 0.2, 0.10, 0.1],
[0.8, 0.4, 0.1, 0.2, 0.4, 0.1, 0.2],
[0.8, 0.4, 0.4, 0.2, 0.2, 0.1, 0.1],
[0.4, 0.0, 0.1, 0.1, 0.2, 0, 0.1, 0.4],
[0.1, 0.1, 0.1, 0.0, 0.2, 0.0, 0.1, 0.2, 0.4],
[0.8, 0.4, 0.1, 0.4, 0.2, 0.2, 0.1, 0.2, 0.8, 0.1, 0.4, 0.1],
[0.2, 0.2, 0.4, 0.2, 0.1, 0.1, 0.0, 0.2],
[1.0, 0.1, 0.2, 0.1, 0.2, 0.2],
[0.2, 0.1, 0.2, 0.4, 0.1, 0.2, 0.4],
[0.4, 0.1, 0.4, 0.2, 0.4, 0.1, 0.4, 0.2],
[0.1, 0.1, 0.1, 0.2, 0.1, 0.1, 0.2],
[0.1, 0.1, 0.1, 0.2, 0.1, 0.1, 0.1, 0.2, 0.0],
[0.1, 0.0, 0.1, 0.0, 0.1, 0.0, 0.2, 0.0, 0.2, 0.0, 0.1, 0.1, 0.3],
]
if sunrise or sunset:
random_melody = random.choice(melodies[0:12])
else:
random_melody = random.choice(melodies)
# Testing a new melody-generation idea - duncan 11/4/20
# - needs more work, disabling for now - 12/4/20
#random_melody = []
#melody_length = random.randrange(1, 12)
#
#for i in range(0, melody_length):
# random_melody.append( round(random.uniform(0.1, 0.6), 1) )
# test end
if morning:
random_melody = melodies[-1]
print random_melody
last_interval = 0.0
last_transpose = 0
for i, interval in enumerate(random_melody):
random_note = random.choice(notes)
# the first note should be high
# identical intervals should often hold the same pitch
# otherwise, pick a random pitch
if i == 0:
random_transpose = random.choice([8, 12])
elif (last_interval == interval):
if random.choice([0,1,2]) == 2:
random_transpose = last_transpose
else:
random_transpose = 0
else:
random_transpose = random.choice([0,2,4,6,8,10,12])
last_interval = interval
last_transpose = random_transpose
note = random_note.transpose(random_transpose)
#print note
# favour queued notes, but occasionally overlap them too
if (random.choice([1,2,3,4,5,6]) > 2):
time = time + interval
timeline.add(time, Hit(note, interval))
else:
timeline.add(time, Hit(note, interval))
time = time + interval
#print "Rendering audio..."
data = timeline.render()
# Reduce volume to 50%
data = data * 0.5
print "Playing audio..."
if morning:
for i in range(2):
playback.play(data)
else:
for i in range(random.choice([1,2])):
playback.play(data)
import random
from musical.theory import Note, Scale
from musical.audio import effect, playback
from timeline import Hit, Timeline
# Define key and scale
key = Note('E3')
scale = Scale(key, 'major')
time = 0.0 # Keep track of currect note placement time in seconds
timeline = Timeline()
note = key
# Semi-randomly queue notes from the scale
for i in xrange(64):
if note.index > 50 or note.index < 24:
# If note goes out of comfort zone, randomly place back at base octave
note = scale.get(random.randrange(4) * 2)
note = note.at_octave(key.octave)
else:
# Transpose the note by some small random interval
note = scale.transpose(note, random.choice((-2, -1, 1, 2)))
length = random.choice((0.125, 0.125, 0.25))
timeline.add(time, Hit(note, length + 0.125))
time += length
