code: def mel_scale(freq: Tensor) -> Tensor:
      return 1127.0 * (1.0 + freq / 700.0).log()
  
imports: import math
  from typing import Tuple
  import torch
  import torchaudio
  from torch import Tensor
label_desc: Use image node_id 13 for calling a global function with example usage: mel_scale(freq) and returns: unknown