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In [1]:



    


midifile = 'data/chopin-fantaisie.mid'



    











In [2]:



    


import time
import copy
import subprocess
from abc import abstractmethod

import numpy as np
import midi # Midi file parser

from midipattern import MidiPattern
from distorter import *
from align import align_frame_to_frame, read_align, write_align



    


















    






device 0 ('ALSA', 'Midi Through Port-0', 0, 1, 0)
device 1 ('ALSA', 'Midi Through Port-0', 1, 0, 0)
device 2 ('ALSA', 'TiMidity port 0', 0, 1, 0)
device 3 ('ALSA', 'TiMidity port 1', 0, 1, 0)
device 4 ('ALSA', 'TiMidity port 2', 0, 1, 0)
device 5 ('ALSA', 'TiMidity port 3', 0, 1, 0)

















In [3]:



    


MidiPattern.MIDI_DEVICE = 2

Init Pygame and Audio

Midi Pattern





In [4]:



    


pattern = MidiPattern(midi.read_midifile(midifile))
simple = pattern.simplified(bpm=160)
simple.stamp_time('t0')
midi.write_midifile("generated/simple.mid", simple)



    











In [5]:



    


print simple.attributes[0][-40:]



    


















    






[{'t0': 203.24999999999994}, {'t0': 203.25468749999993}, {'t0': 203.34843749999993}, {'t0': 203.34843749999993}, {'t0': 203.43749999999994}, {'t0': 203.44218749999993}, {'t0': 203.53124999999994}, {'t0': 203.53124999999994}, {'t0': 203.62499999999994}, {'t0': 203.62499999999994}, {'t0': 203.71874999999994}, {'t0': 203.71874999999994}, {'t0': 203.81249999999994}, {'t0': 203.81249999999994}, {'t0': 203.90624999999994}, {'t0': 203.90624999999994}, {'t0': 203.99999999999994}, {'t0': 203.99999999999994}, {'t0': 203.99999999999994}, {'t0': 203.99999999999994}, {'t0': 204.04687499999994}, {'t0': 204.09374999999994}, {'t0': 204.14062499999994}, {'t0': 204.18749999999994}, {'t0': 204.28124999999994}, {'t0': 205.49999999999994}, {'t0': 205.49999999999994}, {'t0': 205.49999999999994}, {'t0': 205.49999999999994}, {'t0': 205.49999999999994}, {'t0': 205.49999999999994}, {'t0': 205.54687499999994}, {'t0': 205.59374999999994}, {'t0': 205.64062499999994}, {'t0': 206.99999999999994}, {'t0': 206.99999999999994}, {'t0': 206.99999999999994}, {'t0': 206.99999999999994}, {'t0': 206.99999999999994}, {'t0': 209.52109374999995}]

















In [6]:



    


pattern[0]
pattern.play(180)



    


















    






Was playing note 40 time 4.44444444444

















In [7]:



    


simple.play()



    


















    






Was playing note 5 time 3.0

Distorter





In [8]:



    


distorter = VelocityNoiseDistorter(sigma=20.)
distorter.randomize()
print distorter
dist_pattern = distorter.distort(simple)
midi.write_midifile('generated/velocity-noise.mid', dist_pattern)
dist_pattern.play(bpm=180)



    


















    






VelocityNoiseDistorter(sigma=7.63)
Was playing note 5 time 2.66666666667

















In [9]:



    


print dist_pattern.attributes[0][-4:]



    


















    






[{'t': 206.99999999999994, 't0': 206.99999999999994}, {'t': 206.99999999999994, 't0': 206.99999999999994}, {'t': 206.99999999999994, 't0': 206.99999999999994}, {'t': 209.52109374999995, 't0': 209.52109374999995}]

















In [10]:



    


distorter = VelocityWalkDistorter(sigma=0.1)
distorter.randomize()
print distorter
dist_pattern = distorter.distort(simple)
midi.write_midifile('generated/velocity-walk.mid', dist_pattern)
dist_pattern.play(bpm=180)



    


















    






VelocityWalkDistorter(sigma=19.24, min=1.18, max=1.23)
Was playing note 5 time 2.66666666667

















In [11]:



    


distorter = ProgramDistorter()
distorter.randomize()
# for some reason GM 1- 3 makes no sound in pygame?
print distorter
dist_pattern = distorter.distort(simple)
midi.write_midifile('generated/program.mid', dist_pattern)
dist_pattern.play(bpm=180)



    


















    






ProgramDistorter(ticks=0.00)
Was playing note 19 time 2.66666666667

















In [12]:



    


distorter = TempoDistorter(sigma=0, min=0.5, max=2.)
distorter.randomize()
print distorter
dist_pattern = distorter.distort(simple)
print 'time warp', dist_pattern.attributes[0][-4:]
midi.write_midifile('generated/tempo.mid', dist_pattern)
dist_pattern.play(bpm=180)



    


















    






TempoDistorter(sigma=0.83, min=0.99, max=1.21)
time warp [{'t': 200.28854166666386, 't0': 206.99999999999994}, {'t': 200.28932291666385, 't0': 206.99999999999994}, {'t': 200.29010416666384, 't0': 206.99999999999994}, {'t': 200.38932291666384, 't0': 209.52109374999995}]
Was playing note 14 time 0.360416666667

















In [13]:



    


distorter = TimeNoiseDistorter()
distorter.randomize()
print distorter
dist_pattern = distorter.distort(simple)
print 'time warp', dist_pattern.attributes[0][-4:]
midi.write_midifile('generated/time.mid', dist_pattern)
dist_pattern.play(bpm=180)



    


















    






TimeNoiseDistorter(sigma=0.08)
time warp [{'t': 206.99999999999977, 't0': 206.99999999999994}, {'t': 206.99999999999977, 't0': 206.99999999999994}, {'t': 206.99999999999977, 't0': 206.99999999999994}, {'t': 209.52109374999978, 't0': 209.52109374999995}]
Was playing note 5 time 2.62916666667

Individual Note Times to Global Alignment





In [14]:



    


stride = 1.
align = align_frame_to_frame(dist_pattern, stride)
align



    


















    
Out[14]:








[0,
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In [15]:



    


write_align('generated/align.txt', align, stride)
align2, stride2 = read_align('generated/align.txt')
print align2 == align
print int(stride2) == int(stride), stride2, stride



    


















    






True
True 1.0 1.0

Actual Generation





In [20]:



    


dist_pattern = random_distort(simple)
align = align_frame_to_frame(dist_pattern, stride=1.)
print align
dist_pattern.play()



    


















    






[2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 57, 58, 59, 61, 62, 63, 64, 65, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 79, 80, 81, 82, 83, 84, 86, 87, 88, 89, 90, 91, 92, 94, 95, 96, 97, 98, 100, 101, 102, 103, 104, 106, 107, 108, 109, 110, 111, 112, 114, 115, 116, 117, 118, 119, 120, 122, 123, 124, 125, 126, 127, 128, 129, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 207]
Was playing note 77 time 3.18072916667

















In [21]:



    


num_samples = 10
stride = 0.1
for i in xrange(num_samples):
    base_name = 'generated/sample-{}'.format(i)
    align_name = '{}.txt'.format(base_name)
    midi_name = '{}.mid'.format(base_name)
    wav_name = '{}.wav'.format(base_name)
    distorted = random_distort(simple)
    align = align_frame_to_frame(distorted, stride)
    write_align(align_name, align, stride)
    midi.write_midifile(midi_name, distorted)
    # Convert to wav using timidity
    print wav_name
    subprocess.check_call(['timidity', '-Ow', midi_name, '-o', wav_name])
    print 'Done generating {}'.format(base_name)



    


















    






generated/sample-0.wav
Done generating generated/sample-0
generated/sample-1.wav
Done generating generated/sample-1
generated/sample-2.wav
Done generating generated/sample-2
generated/sample-3.wav
Done generating generated/sample-3
generated/sample-4.wav
Done generating generated/sample-4
generated/sample-5.wav
Done generating generated/sample-5
generated/sample-6.wav
Done generating generated/sample-6
generated/sample-7.wav
Done generating generated/sample-7
generated/sample-8.wav
Done generating generated/sample-8
generated/sample-9.wav
Done generating generated/sample-9

Content source: gabrielhuang/musicalign

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