espnet2.tts.feats_extract.yin.differenceFunction_np

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espnet2.tts.feats_extract.yin.differenceFunction_np(x, N, tau_max)

Compute difference function of data x. This corresponds to equation (6) in [1]

This solution is implemented directly with Numpy fft.

• Parameters:
  • x – audio data
  • N – length of data
  • tau_max – integration window size
• Returns: difference function
• Return type: list