set the number of repetitions for the stimuli (reference tone and cal stim)

        :param reps: number of times to present the same stimulus
        :type reps: int

def set_reps(self, reps):
        """set the number of repetitions for the stimuli (reference tone and cal stim)

        :param reps: number of times to present the same stimulus
        :type reps: int
        """
        self.stimulus.setRepCount(reps)
        self.refstim.setRepCount(reps)