Merge pull request #671 from alibaba-damo-academy/dev_lhn

hnluo

2023-06-27 a19c9e5c805d727d2d0a81053997d70e3326e3cb

 funasr/models/specaug/abs_specaug.py

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from typing import Optional
from typing import Tuple

import torch


class AbsSpecAug(torch.nn.Module):
    """Abstract class for the augmentation of spectrogram
    The process-flow:
    Frontend  -> SpecAug -> Normalization -> Encoder -> Decoder
    """

    def forward(
        self, x: torch.Tensor, x_lengths: torch.Tensor = None
    ) -> Tuple[torch.Tensor, Optional[torch.Tensor]]:
        raise NotImplementedError