code: def spectral_de_normalize_torch(magnitudes):
      output = dynamic_range_decompression_torch(magnitudes)
      return output
  
imports: import math
  import os
  import random
  import torch
  import torch.utils.data
  import numpy
  from librosa.util import normalize
  from scipy.io.wavfile import read
  from librosa.filters import mel
label_desc: Use image node_id 7 for calling a global function with example usage: spectral_de_normalize_torch(magnitudes) and returns: output