Differences with torchaudio.transforms.TimeMasking

torchaudio.transforms.TimeMasking

class torchaudio.transforms.TimeMasking(time_mask_param: int, iid_masks: bool = False)

For more information, see torchaudio.transforms.TimeMasking.

mindspore.dataset.audio.TimeMasking

class mindspore.dataset.audio.TimeMasking(iid_masks=False, time_mask_param=0, mask_start=0, mask_value=0.0)

For more information, see mindspore.dataset.audio.TimeMasking.

Differences

PyTorch: Apply masking to a spectrogram in the time domain.

MindSpore: Apply masking to a spectrogram in the time domain. Variable mask_value is not supported.

Categories	Subcategories	PyTorch	MindSpore	Difference
Parameter	Parameter1	time_mask_param	time_mask_param	-
	Parameter2	iid_masks	iid_masks	-
	Parameter3	-	mask_start	Starting point to apply mask
	Parameter4	-	mask_value	Value to assign to the masked location, can not be changed during computing in MindSpore

Code Exampleimport numpy as np

fake_wav = np.array([[[0.17274511, 0.85174704, 0.07162686, -0.45436913],
                      [-1.0271876, 0.33526883, 1.7413973, 0.12313101]]]).astype(np.float32)

# PyTorch
import torch
import torchaudio.transforms as T
torch.manual_seed(1)

transformer = T.TimeMasking(time_mask_param=2, iid_masks=True)
torch_result = transformer(torch.from_numpy(fake_wav), mask_value=0.0)
print(torch_result)
# Out: tensor([[[ 0.0000,  0.8517,  0.0716, -0.4544],
#               [ 0.0000,  0.3353,  1.7414,  0.1231]]])

# MindSpore
import mindspore as ms
import mindspore.dataset.audio as audio
ms.dataset.config.set_seed(2)

transformer = audio.TimeMasking(time_mask_param=2, iid_masks=True, mask_start=0, mask_value=0.0)
ms_result = transformer(fake_wav)
print(ms_result)
# Out: [[[ 0.          0.85174704  0.07162686 -0.45436913]
#        [ 0.          0.33526883  1.7413973   0.12313101]]]