class_docstr: speech feat entrypoint unittest
class_docstr_tok: ["speech","feat","entrypoint","unittest"]
code: def setUp(self):
      super().setUp()
      self.winlen = 0.025
      self.winstep = 0.010
      self.feature_size = 40
      self.sr = 8000  # pylint: disable=invalid-name
      self.nfft = 512
      self.feat_type = "logfbank"
  
      package_root = Path(PACKAGE_ROOT_DIR)
      self.wavfile = str(
          package_root.joinpath(
              "data/feat/python_speech_features/english.wav"
          )
      )
      self.featfile = str(
          package_root.joinpath(
              "data/feat/python_speech_features/english.npy"
          )
      )
  
file_path: delta/delta/data/feat/speech_feature_test.py
imports: import os
  from pathlib import Path
  import librosa
  import numpy
  import delta.compat
  from absl import logging
  from delta.data.feat import speech_ops
  from delta.data.feat import speech_feature
  from delta import PACKAGE_ROOT_DIR
label_desc: Use image node_id 1 for calling the SpeechFeatureTest obj's underlying member method code with example usage: obj.setUp() without return types