The present invention relates to a voice improvement method for universal communication between speech impaired people and foreigners, and more specifically, a voice signal is received and recognized in phoneme units, and the voice component of the phoneme unit is extracted to obtain a pre-registered pronunciation. The present invention relates to a speech improvement method for universal communication between speech-disabled people and foreigners in which speech signals are corrected based on a pronunciation dictionary table when correction is required by comparing them with a dictionary table.
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