mindspore.dataset.audio.transforms.Angle

class mindspore.dataset.audio.transforms.Angle[source]

Calculate the angle of complex number sequence.

Note

The dimension of the audio waveform to be processed needs to be (…, complex=2). The first dimension represents the real part while the second represents the imaginary.

Raises: RuntimeError – If input tensor is not in shape of <…, complex=2>.

Supported Platforms:: CPU

Examples

>>> import numpy as np
>>>
>>> waveform = np.array([[1.43, 5.434], [23.54, 89.38]])
>>> numpy_slices_dataset = ds.NumpySlicesDataset(data=waveform, column_names=["audio"])
>>> transforms = [audio.Angle()]
>>> numpy_slices_dataset = numpy_slices_dataset.map(operations=transforms, input_columns=["audio"])