def sad_music_remix(self, neg_arous_dir, files, decisions, harmonic = None):
for subdirs, dirs, sounds in os.walk(neg_arous_dir):
fx = random.choice(sounds[::-1])
fy = random.choice(sounds[:])
x = MonoLoader(filename = neg_arous_dir + '/' + fx)()
y = MonoLoader(filename = neg_arous_dir + '/' + fy)()
fx = fx.split('.')[0]
fy = fy.split('.')[0]
fx = np.where(files == fx)[0][0]
fy = np.where(files == fy)[0][0]
if harmonic is False or None:
dec_x = get_coordinate(fx, 1, decisions)
dec_y = get_coordinate(fy, 1, decisions)
else:
dec_x = get_coordinate(fx, 2, decisions)
dec_y = get_coordinate(fy, 2, decisions)
x = self.source_separation(x)
x = scratch_music(x, dec_x)
x = x[np.nonzero(x)]
y = scratch_music(y, dec_y)
y = y[np.nonzero(y)]
x, y = same_time(x,y)
negative_arousal_samples = [i/i.max() for i in (x,y)]
negative_arousal_x = np.array(negative_arousal_samples).sum(axis=0)
negative_arousal_x = 0.5*negative_arousal_x/negative_arousal_x.max()
if harmonic is True:
return librosa.decompose.hpss(librosa.stft(negative_arousal_x), margin = (1.0, 5.0))[0]
if harmonic is False or harmonic is None:
onsets = hfc_onsets(np.float32(negative_arousal_x))
interv = seconds_to_indices(onsets)
steps = overlapped_intervals(interv)
output = librosa.effects.remix(negative_arousal_x, steps[::-1], align_zeros = False)
output = librosa.effects.pitch_shift(output, sr = 44100, n_steps = 3)
remix_filename = 'data/emotions/remixes/sad/'+str(time.strftime("%Y%m%d-%H:%M:%S"))+'multitag_remix.ogg'
MonoWriter(filename=remix_filename, format = 'ogg', sampleRate = 44100)(np.float32(output))
subprocess.call(["ffplay", "-nodisp", "-autoexit", remix_filename])
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