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Update audio_spec.py #339

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5d039b7
Update audio_spec.py
shaoyijia Aug 3, 2021
332c457
Fix the potential "nan" problem in BrowserFftSpec.
shaoyijia Aug 3, 2021
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2 changes: 2 additions & 0 deletions tensorflow_examples/lite/model_maker/core/task/model_spec/audio_spec.py
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Original file line number Diff line number Diff line change
Expand Up @@ -283,6 +283,8 @@ def _split(self, wav, label):
])
def _preprocess(self, x, label):
"""Preprocess the dataset to extract the spectrum."""
# Add small Gaussian noise to the input x to solve the potential "nan" problem of the preprocess_model
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Please wrap this line. Python code is expected to have a max len = 80.

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Already fixed this problem.

x = x + 1e-05 * tf.random.normal(x.shape)
# x has shape (1, EXPECTED_WAVEFORM_LENGTH)
spectrum = self._preprocess_model(x)
# y has shape (1, embedding_len)
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