mindspore.dataset.audio.Angle
- class mindspore.dataset.audio.Angle[源代码]
计算复数序列的角度。
说明
待处理音频shape需为<…, complex=2>。第零维代表实部,第一维代表虚部。
- 异常:
RuntimeError - 当输入音频的shape不为<…, complex=2>。
- 支持平台:
CPU
样例:
>>> import numpy as np >>> import mindspore.dataset as ds >>> import mindspore.dataset.audio as audio >>> >>> # Use the transform in dataset pipeline mode >>> waveform = np.random.random([5, 16, 2]) # 5 samples >>> 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"]) >>> for item in numpy_slices_dataset.create_dict_iterator(num_epochs=1, output_numpy=True): ... print(item["audio"].shape, item["audio"].dtype) ... break (16,) float64 >>> >>> # Use the transform in eager mode >>> waveform = np.random.random([16, 2]) # 1 sample >>> output = audio.Angle()(waveform) >>> print(output.shape, output.dtype) (16,) float64
- 教程样例: