class_docstr: *Device Recorded VCTK (Small subset version)* :cite:`Sarfjoo2018DeviceRV` dataset.
  
  Args:
      root (str or Path): Root directory where the dataset's top level directory is found.
      subset (str): The subset to use. Can be one of ``"train"`` and ``"test"``. (default: ``"train"``).
      download (bool):
          Whether to download the dataset if it is not found at root path. (default: ``False``).
      url (str): The URL to download the dataset from.
          (default: ``"https://datashare.ed.ac.uk/bitstream/handle/10283/3038/DR-VCTK.zip"``)
code: def __len__(self) -> int:
      return len(self._filename_list)
  
file_path: audio/src/torchaudio/datasets/dr_vctk.py
imports: from pathlib import Path
  from typing import Dict, Tuple, Union
  import torchaudio
  from torch import Tensor
  from torch.utils.data import Dataset
  from torchaudio._internal import download_url_to_file
  from torchaudio.datasets.utils import _extract_zip
label_desc: Use image node_id 5 for calling the DR_VCTK obj's underlying member method code with example usage: obj.__len__() and returns: len