def StartTime(self):
    first_line = self.split_lines_of_utt[self.start_index]
    first_line_start = float(first_line[2])
    first_line_duration = float(first_line[3])
    first_line_end = (first_line_start + first_line_duration)
    return ((first_line_end - self.start_unk_padding) - (first_line_duration * self.start_keep_proportion))
def StartTime(self):
    first_line = self.split_lines_of_utt[self.start_index]
    first_line_start = float(first_line[2])
    first_line_duration = float(first_line[3])
    first_line_end = (first_line_start + first_line_duration)
    return ((first_line_end - self.start_unk_padding) - (first_line_duration * self.start_keep_proportion))