    def __init__(self, raw_file, list_file):
        """ raw_file: swbd_sre_combined_20k_20480.h5
            list_file: list/training.txt
        """
        self.raw_file  = raw_file 

        with open(list_file) as f:
            temp = f.readlines()
        self.utts = [x.strip() for x in temp]
raw_file: swbd_sre_combined_20k_20480.h5
list_file: list/training.txt
src/data_reader/dataset.py