| 摘要 |
PURPOSE: A speech recognition apparatus and a method thereof are provided to reduce error of remote speech recognition. CONSTITUTION: A syntax analyzing unit(23) analyzes syntax based on a morpheme word class to generate a hierarchical structure. A hierarchical word list generating unit(24) generates a word list by a hierarchy of a recognition word using the hierarchical structure. A hierarchical n-gram applying unit(25) generates a hierarchical n-gram score of the word list by a hierarchy. A calculation unit(27) adds the hierarchical n-gram score to sound and language model probability to generate a speech recognition score of the recognition word. |
