class_docstr: test speech feat ops
class_docstr_tok: ["test","speech","feat","ops"]
code: def setUp(self):
      super().setUp()
      self.sr_true = 8000
      # pylint: disable=invalid-name
      self.hp = tffeat.speech_params(
          sr=self.sr_true,
          bins=40,
          cmvn=False,
          audio_desired_samples=1000,
          add_delta_deltas=False,
      )
      self.wavpath = str(
          Path(PACKAGE_ROOT_DIR).joinpath(
              "data/feat/python_speech_features/english.wav"
          )
      )
      _, self.audio_true = load_wav(self.wavpath, sr=self.sr_true)
  
file_path: delta/delta/data/feat/speech_ops_test.py
imports: import os
  from pathlib import Path
  import numpy
  import delta.compat
  from absl import logging
  from delta.data.feat.speech_feature import load_wav
  from delta.data.feat import speech_ops
  from delta import PACKAGE_ROOT_DIR
label_desc: Use image node_id 1 for calling the SpeechOpsFeatTest obj's underlying member method code with example usage: obj.setUp() without return types