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Effect of Japanese utterance training using lip movement

Lip movements have long been the subject of research. There are many methods of lip movement recognition, such as the calculation of the amount of movement compared to a matching face pattern. In a previous study, we investigated utterance recognition based on the power spectrum by focusing on lip movements, which is one aspect of multimodal voice recognition systems. However, we found that the utterance recognition rate varied depending on the participants throughout our research. For this reason, we propose a training method for the purpose of utterance improvement in Japanese.