code: def _get_mock_params(path: str):
      filename, ext = path.split(".")
      parts = filename.split("_")
      return {
          "ext": ext,
          "dtype": parts[0],
          "sample_rate": int(parts[1]),
          "num_channels": int(parts[2]),
          "num_frames": int(parts[3]),
      }
  
imports: import os
  import tarfile
  from unittest.mock import patch
  import torch
  from parameterized import parameterized
  from torchaudio._internal import module_utils
  from torchaudio.backend import soundfile_backend
  from torchaudio_unittest.common_utils import get_wav_data, load_wav, normalize_wav, PytorchTestCase, save_wav, skipIfNoModule, TempDirMixin
  from .common import dtype2subtype, parameterize, skipIfFormatNotSupported
label_desc: Use image node_id 2 for calling a global function with example usage: _get_mock_params(path) and returns: dict