code: def no_speaker(_):
      """
      The dataset doesn't provide speaker information; please
      use speaker-independent F0 normalization.
      """
  
      return None
  
imports: from typing import Callable, Union, Optional, Any, Dict, List
  import pathlib
  import torch
  import logging
  from torchaudio.datasets import LIBRISPEECH, LJSPEECH, COMMONVOICE, VCTK_092, YESNO
  from torch.utils.data import Dataset
  from textless.data.speech_encoder import SpeechEncoder
  from textless.data.collater_utils import collate_tensors
label_desc: Use image node_id 9 for calling a global function with example usage: no_speaker(_) and returns: None