63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
import random
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import torch
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import torchaudio.sox_effects
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from models.tacotron2.taco_utils import load_wav_to_torch
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# Returns random double on [l,h] as a string
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def rdstr(l=0,h=1):
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assert h > l
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i=h-l
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return str(random.random() * i + l)
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# Returns a randint on [s,e] as a string
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def rdi(e, s=0):
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return str(random.randint(s,e))
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class WavAugmentor:
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def __init__(self):
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pass
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def augment(self, wav, sample_rate):
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speed_effect = ['speed', rdstr(.8, 1)]
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'''
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Band effects are disabled until I can audit them better.
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band_effects = [
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['reverb', '-w'],
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['reverb'],
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['band', rdi(8000, 3000), rdi(1000, 100)],
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['bandpass', rdi(8000, 3000), rdi(1000, 100)],
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['bass', rdi(20,-20)],
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['treble', rdi(20,-20)],
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['dither'],
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['equalizer', rdi(3000, 100), rdi(1000, 100), rdi(10, -10)],
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['hilbert'],
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['sinc', '3k'],
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['sinc', '-4k'],
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['sinc', '3k-4k']
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]
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band_effect = random.choice(band_effects)
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'''
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volume_effects = [
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['loudness', rdi(10,-2)],
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['overdrive', rdi(20,0), rdi(20,0)],
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]
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vol_effect = random.choice(volume_effects)
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effects = [speed_effect, vol_effect]
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out, sr = torchaudio.sox_effects.apply_effects_tensor(wav, sample_rate, effects)
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# Add a variable amount of noise
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out = out + torch.rand_like(out) * random.random() * .03
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return out
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if __name__ == '__main__':
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sample, _ = load_wav_to_torch('obama1.wav')
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sample = sample / 32768.0
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aug = WavAugmentor()
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for j in range(10):
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out = aug.augment(sample, 24000)
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torchaudio.save(f'out{j}.wav', out, 24000) |