def test_scaler(self): scaler_stats_path = os.path.join(get_tests_input_path(), 'scale_stats.npy') conf.audio['stats_path'] = scaler_stats_path conf.audio['preemphasis'] = 0.0 conf.audio['do_trim_silence'] = True conf.audio['signal_norm'] = True ap = AudioProcessor(**conf.audio) mel_mean, mel_std, linear_mean, linear_std, _ = ap.load_stats(scaler_stats_path) ap.setup_scaler(mel_mean, mel_std, linear_mean, linear_std) self.ap.signal_norm = False self.ap.preemphasis = 0.0 # test scaler forward and backward transforms wav = self.ap.load_wav(WAV_FILE) mel_reference = self.ap.melspectrogram(wav) mel_norm = ap.melspectrogram(wav) mel_denorm = ap._denormalize(mel_norm) assert abs(mel_reference - mel_denorm).max() < 1e-4
class TestAudio(unittest.TestCase): def __init__(self, *args, **kwargs): super(TestAudio, self).__init__(*args, **kwargs) self.ap = AudioProcessor(**conf.audio) def test_audio_synthesis(self): """ 1. load wav 2. set normalization parameters 3. extract mel-spec 4. invert to wav and save the output """ print(" > Sanity check for the process wav -> mel -> wav") def _test(max_norm, signal_norm, symmetric_norm, clip_norm): self.ap.max_norm = max_norm self.ap.signal_norm = signal_norm self.ap.symmetric_norm = symmetric_norm self.ap.clip_norm = clip_norm wav = self.ap.load_wav(WAV_FILE) mel = self.ap.melspectrogram(wav) wav_ = self.ap.inv_melspectrogram(mel) file_name = "/audio_test-melspec_max_norm_{}-signal_norm_{}-symmetric_{}-clip_norm_{}.wav"\ .format(max_norm, signal_norm, symmetric_norm, clip_norm) print(" | > Creating wav file at : ", file_name) self.ap.save_wav(wav_, OUT_PATH + file_name) # maxnorm = 1.0 _test(1., False, False, False) _test(1., True, False, False) _test(1., True, True, False) _test(1., True, False, True) _test(1., True, True, True) # maxnorm = 4.0 _test(4., False, False, False) _test(4., True, False, False) _test(4., True, True, False) _test(4., True, False, True) _test(4., True, True, True) def test_normalize(self): """Check normalization and denormalization for range values and consistency """ print(" > Testing normalization and denormalization.") wav = self.ap.load_wav(WAV_FILE) wav = self.ap.sound_norm(wav) # normalize audio to get abetter normalization range below. self.ap.signal_norm = False x = self.ap.melspectrogram(wav) x_old = x self.ap.signal_norm = True self.ap.symmetric_norm = False self.ap.clip_norm = False self.ap.max_norm = 4.0 x_norm = self.ap._normalize(x) print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}") assert (x_old - x).sum() == 0 # check value range assert x_norm.max() <= self.ap.max_norm + 1, x_norm.max() assert x_norm.min() >= 0 - 1, x_norm.min() # check denorm. x_ = self.ap._denormalize(x_norm) assert (x - x_).sum() < 1e-3, (x - x_).mean() self.ap.signal_norm = True self.ap.symmetric_norm = False self.ap.clip_norm = True self.ap.max_norm = 4.0 x_norm = self.ap._normalize(x) print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}") assert (x_old - x).sum() == 0 # check value range assert x_norm.max() <= self.ap.max_norm, x_norm.max() assert x_norm.min() >= 0, x_norm.min() # check denorm. x_ = self.ap._denormalize(x_norm) assert (x - x_).sum() < 1e-3, (x - x_).mean() self.ap.signal_norm = True self.ap.symmetric_norm = True self.ap.clip_norm = False self.ap.max_norm = 4.0 x_norm = self.ap._normalize(x) print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}") assert (x_old - x).sum() == 0 # check value range assert x_norm.max() <= self.ap.max_norm + 1, x_norm.max() assert x_norm.min() >= -self.ap.max_norm - 2, x_norm.min() #pylint: disable=invalid-unary-operand-type assert x_norm.min() <= 0, x_norm.min() # check denorm. x_ = self.ap._denormalize(x_norm) assert (x - x_).sum() < 1e-3, (x - x_).mean() self.ap.signal_norm = True self.ap.symmetric_norm = True self.ap.clip_norm = True self.ap.max_norm = 4.0 x_norm = self.ap._normalize(x) print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}") assert (x_old - x).sum() == 0 # check value range assert x_norm.max() <= self.ap.max_norm, x_norm.max() assert x_norm.min() >= -self.ap.max_norm, x_norm.min() #pylint: disable=invalid-unary-operand-type assert x_norm.min() <= 0, x_norm.min() # check denorm. x_ = self.ap._denormalize(x_norm) assert (x - x_).sum() < 1e-3, (x - x_).mean() self.ap.signal_norm = True self.ap.symmetric_norm = False self.ap.max_norm = 1.0 x_norm = self.ap._normalize(x) print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}") assert (x_old - x).sum() == 0 assert x_norm.max() <= self.ap.max_norm, x_norm.max() assert x_norm.min() >= 0, x_norm.min() x_ = self.ap._denormalize(x_norm) assert (x - x_).sum() < 1e-3 self.ap.signal_norm = True self.ap.symmetric_norm = True self.ap.max_norm = 1.0 x_norm = self.ap._normalize(x) print(f" > MaxNorm: {self.ap.max_norm}, ClipNorm:{self.ap.clip_norm}, SymmetricNorm:{self.ap.symmetric_norm}, SignalNorm:{self.ap.signal_norm} Range-> {x_norm.max()} -- {x_norm.min()}") assert (x_old - x).sum() == 0 assert x_norm.max() <= self.ap.max_norm, x_norm.max() assert x_norm.min() >= -self.ap.max_norm, x_norm.min() #pylint: disable=invalid-unary-operand-type assert x_norm.min() < 0, x_norm.min() x_ = self.ap._denormalize(x_norm) assert (x - x_).sum() < 1e-3 def test_scaler(self): scaler_stats_path = os.path.join(get_tests_input_path(), 'scale_stats.npy') conf.audio['stats_path'] = scaler_stats_path conf.audio['preemphasis'] = 0.0 conf.audio['do_trim_silence'] = True conf.audio['signal_norm'] = True ap = AudioProcessor(**conf.audio) mel_mean, mel_std, linear_mean, linear_std, _ = ap.load_stats(scaler_stats_path) ap.setup_scaler(mel_mean, mel_std, linear_mean, linear_std) self.ap.signal_norm = False self.ap.preemphasis = 0.0 # test scaler forward and backward transforms wav = self.ap.load_wav(WAV_FILE) mel_reference = self.ap.melspectrogram(wav) mel_norm = ap.melspectrogram(wav) mel_denorm = ap._denormalize(mel_norm) assert abs(mel_reference - mel_denorm).max() < 1e-4