mindspore.dataset.audio.Gain

class mindspore.dataset.audio.Gain(gain_db=1.0)[源代码]

放大或衰减整个音频波形。

参数:
  • gain_db (float) - 增益调整,单位为分贝(dB)。默认值: 1.0

异常:
  • TypeError - 当 gain_db 的类型不为float。

支持平台:

CPU

样例:

>>> import numpy as np
>>> import mindspore.dataset as ds
>>> import mindspore.dataset.audio as audio
>>>
>>> waveform = np.array([[2.716064453125e-03, 6.34765625e-03], [9.246826171875e-03, 1.0894775390625e-02]])
>>> numpy_slices_dataset = ds.NumpySlicesDataset(data=waveform, column_names=["audio"])
>>> transforms = [audio.Gain(1.2)]
>>> numpy_slices_dataset = numpy_slices_dataset.map(operations=transforms, input_columns=["audio"])
教程样例: