def _get_audio_channels(self, audio_abs_path):
channel_num = int(<EOL>subprocess.check_output(<EOL>("""<STR_LIT>"""<EOL>).format(audio_abs_path, "<STR_LIT>"),<EOL>shell=True, universal_newlines=True).rstrip())<EOL>return channel_num<EOL>
Parameters
----------
audio_abs_path : str

Returns
-------
channel_num : int