code: def load_audio(self, wav):
      wav = os.path.abspath(os.path.expanduser(wav))
      assert os.path.isfile(wav), "Please check wav file: {}".format(
          wav
      )
      waveform, _ = paddleaudio.load(
          wav, sr=self.sr, mono=True, normal=False
      )
      return waveform
  
file_path: PaddleHub/modules/audio/language_identification/ecapa_tdnn_common_language/module.py
imports: import os
  import re
  from typing import List
  from typing import Union
  import numpy
  import paddle
  import paddleaudio
  from .ecapa_tdnn import Classifier
  from .ecapa_tdnn import ECAPA_TDNN
  from .feature import compute_log_fbank
  from .feature import normalize
  from paddlehub.module.module import moduleinfo
  from paddlehub.utils.log import logger
label_desc: Use image node_id 2 for calling the LanguageIdentification obj's underlying member method code with example usage: obj.load_audio(wav) and returns: waveform