mindspore.dataset.audio.DBToAmplitude
- class mindspore.dataset.audio.DBToAmplitude(ref, power)[source]
Turn a waveform from the decibel scale to the power/amplitude scale.
- Parameters
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.DBToAmplitude(0.5, 0.5)] >>> numpy_slices_dataset = numpy_slices_dataset.map(operations=transforms, input_columns=["audio"])