mindspore.dataset.audio.Gain

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

Apply amplification or attenuation to the whole waveform.

Parameters: gain_db (float) – Gain adjustment in decibels (dB) (default=1.0).

Examples

>>> import numpy as np
>>>
>>> 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"])