code: def forward(self, input):
      return torch.exp(input)
  
imports: from typing import Callable, List, Tuple
  import torch
  from torch import Tensor
  from torch.utils.data.dataset import random_split
  from torchaudio.datasets import LJSPEECH
label_desc: Use image node_id 1 for calling the InverseSpectralNormalization obj's underlying member method code with example usage: obj.forward(input) and returns: torch