mindspore.dataset.audio.TrebleBiquad

class mindspore.dataset.audio.TrebleBiquad(sample_rate, gain, central_freq=3000, Q=0.707)[source]

Design a treble tone-control effect.

Similar to SoX implementation.

Parameters

sample_rate (int) – Sampling rate (in Hz), which can’t be zero.
gain (float) – Desired gain at the boost (or attenuation) in dB.
central_freq (float, optional) – Central frequency (in Hz). Default: 3000.
Q (float, optional) – Quality factor , in range of (0, 1]. Default: 0.707.

Raises

TypeError – If sample_rate is not of type int.
ValueError – If sample_rate is 0.
TypeError – If gain is not of type float.
TypeError – If central_freq is not of type float.
TypeError – If Q is not of type float.
ValueError – If Q is not in range of (0, 1].
RuntimeError – If input tensor is not in shape of <…, time>.

Supported Platforms:: CPU

Examples

>>> import numpy as np
>>>
>>> waveform = np.array([[1, 2, 3], [4, 5, 6]], dtype=np.float64)
>>> numpy_slices_dataset = ds.NumpySlicesDataset(data=waveform, column_names=["audio"])
>>> transforms = [audio.TrebleBiquad(44100, 200.0)]
>>> numpy_slices_dataset = numpy_slices_dataset.map(operations=transforms, input_columns=["audio"])