Speech Recognition Method of Variation Unit using Korean Variation Grouping Tree

摘要

The present invention relates to a speech recognition method of a unit of a variable sound using a Korean variable sound grouping tree. A first step of determining whether a middle phoneme is a consonant, a vowel, or a silent by receiving a triphoneme string or a code string corresponding thereto; A second step of performing left phoneme and right phoneme vowel group classification or left phoneme vowel group classification when the middle phoneme is a consonant; A third step in which the left phoneme performs a right phoneme initial, a final left phoneme grouping, a right phoneme SIL (silence) node, and a left phoneme consonant grouping according to the right phoneme when the middle phoneme is a vowel; And a fourth step of converting the SIL node into the SIL node if the phoneme is silent. Therefore, the phoneme can be used as a modeling and analysis unit more useful for speech recognition and speech synthesis based on a phoneme unit or a triphone unit. .