code: def bits_to_normalized_waveform(
      label: torch.Tensor, bits: int
  ) -> torch.Tensor:
      r"""Transform label [0, 2 ** bits - 1] to waveform [-1, 1]"""
  
      return 2 * label / (2**bits - 1.0) - 1.0
  
file_path: audio/examples/pipeline_wavernn/processing.py
imports: import torch
  import torch.nn
label_desc: Use image node_id 2 for calling a global function with example usage: bits_to_normalized_waveform(label, bits) and returns: unknown