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.

espnet2.tts.feats_extract.yin.x

Audio data.

• Type: np.ndarray

espnet2.tts.feats_extract.yin.N

Length of data.

• Type: int

espnet2.tts.feats_extract.yin.tau_max

Integration window size.

• Type: int

• Parameters:

  • x – Audio data as a NumPy array.
  • N – Length of data.
  • tau_max – Integration window size.

• Returns: The computed difference function.

• Return type: list

Examples

>>> x = np.array([0.0, 1.0, 2.0, 3.0])
>>> N = len(x)
>>> tau_max = 2
>>> difference_function_result = differenceFunction_np(x, N, tau_max)

NOTE

Ensure that the input audio data is a 1-dimensional NumPy array.