Embodiments of the present invention include a computer-implemented pronunciation training method comprising receiving a spoken utterance from a user, the spoken utterance including a plurality of sub-units of sound, analyzing the speech quality of the plurality of sub-units of sound of the spoken utterance and generating an audio signal of the spoken utterance from the user while simultaneously displaying the speech quality of each sub-unit of the spoken utterance as each sub-unit of the spoken utterance is generated.