Development of speech training systemthat feeds back the articulation stat

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We have developed an utterance training system using the formant information of audio,visual feedback to the vocal tract shape display and normalized vowel articulation spacearticulation state of the speaker. Result of the trial in speech training of hearing impairedchildren, it is determined normalized vowel articulation space is effective in thequantitative assessment and real-time feedback of articulation state, vocal tract shaperepresentation, formula lip portion since the normalization is insufficient, it is outvariation in the displacement is confirmed, it is believed that it is necessary to furtherimprovements.