def onspeech(self,phrase,listener):
        if phrase.lower() == 'roger':
            self.send_message('comma-roger')
            self.icon_comma.setScale(self.voice_icon_enlarge_size)
            self.icon_comma_reset_scale_at = time.time() + self.voice_icon_enlarge_duration
            taskMgr.doMethodLater(self.voice_icon_enlarge_duration, self.reset_comma, 'reset_comma()')