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Fixes #3178 - Librosa requires 1-dimensional array for mono samples

This commit is contained in:
Tilman Kamp 2020-07-23 17:18:40 +02:00
parent 38f6afdba8
commit ecbdf46940
1 changed files with 7 additions and 2 deletions
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5
training/deepspeech_training/util/augmentations.py
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@ -349,6 +349,11 @@ class Resample(SampleAugmentation):
audio = sample.audio
orig_len = len(audio)
audio = np.swapaxes(audio, 0, 1)
if audio.shape[0] < 2:
# since v0.8 librosa enforces a shape of (samples,) instead of (channels, samples) for mono samples
resampled = resample(audio[0], sample.audio_format.rate, rate)
audio[0] = resample(resampled, rate, sample.audio_format.rate)[:orig_len]
else:
audio = resample(audio, sample.audio_format.rate, rate)
audio = resample(audio, rate, sample.audio_format.rate)
audio = np.swapaxes(audio, 0, 1)[0:orig_len]