code: def setUp(self) -> None:
      @dataclass
      class AudioConfig(Coqpit):
          sample_rate: int = 22050
          fft_size: int = 1024
          num_mels: int = 256
          mel_fmax: int = 1800
          mel_fmin: int = 0
          hop_length: int = 256
          win_length: int = 1024
          pitch_fmax: int = 640
          pitch_fmin: int = 1
          trim_db: int = -1
          min_silence_sec: float = 0.01
          gain: float = 1.0
          base: float = 10.0
  
      self.config = AudioConfig()
      self.sample_wav, _ = librosa.load(
          WAV_FILE, sr=self.config.sample_rate
      )
  
imports: import math
  import os
  import unittest
  from dataclasses import dataclass
  import librosa
  import numpy
  from coqpit import Coqpit
  from tests import get_tests_input_path, get_tests_output_path, get_tests_path
  from TTS.utils.audio import numpy_transforms
label_desc: Use image node_id 1 for calling the TestNumpyTransforms obj's underlying member method code with example usage: obj.setUp() without return types