code: def audio(self, audio, sample_rate, name=None, subdir=''):
          
  
          from chainerui.report.audio_report import check_available
          if not check_available():
              return
          from chainerui.report.audio_report import report as _audio
  
          col_name = self.get_col_name(name, 'audio')
          out_dir, rel_out_dir = self.get_subdir(subdir)
          filename, _ = _audio(audio, sample_rate, out_dir, col_name)
          self.audios[col_name] = os.path.join(rel_out_dir, filename)
  
          self.count += 1
docs: Summary audio to listen on web browser.
  
          Args:
              audio (:class:`numpy.ndarray` or :class:`cupy.ndarray` or \
                  :class:`chainer.Variable`): sampled wave array.
              sample_rate (int): sampling rate.
              name (str): name of image. set as column name. when not setting,
                  assigned ``'audio'`` + sequential number.
              subdir (str): sub-directory path of output.