National Institute of Advanced Industrial Science and Technology

Jun Ogata

Masataka Goto

An unknown word is additionally registered in a speech recognition dictionary by utilizing a correction result, and a new pronunciation of the word that has been registered in a speech recognition dictionary is additionally registered in the speech recognition dictionary, thereby increasing the accuracy of speech recognition. The start time and finish time of each phoneme unit in speech data corresponding to each phoneme included in a phoneme sequence acquired by a phoneme sequence converting sectionare added to the phoneme sequence. A phoneme sequence extracting sectionextracts from the phoneme sequence a phoneme sequence portion composed of phonemes existing in a segment corresponding to the period from the start time to the finish time of the word segment of the word corrected by a word correcting sectionand the extracted phoneme sequence portion is determined as the pronunciation of the corrected word. An additional registration sectioncombines the corrected word with the pronunciation determined by a pronunciation determining sectionand additionally registers the combination as new word pronunciation data in the speech recognition dictionaryif it is determined that a word obtained after correction has not been registered in the speech recognition dictionary. The additional registration sectionadditionally registers the pronunciation determined by the pronunciation determining sectionas another pronunciation of the corrected word if it is determined that the corrected word has been registered.

Speech recognition system and program therefor

A speech recognition system is provided where a user may more efficiently and easily correct a recognition error resulting from speech recognition. The system compares multiple inputted words with multiple stored words and determines a most-competitive word candidate. The system selects one or more competitive words that have competitive probabilities close to the competitive probability of the most-competitive word candidate and displays the one or more competitive words adjacent to the most-competitive word candidate. The system selects an appropriate correction word from the one or more competitive words and replaces one of the most competitive word candidate with the correction word.

Growing community of inventors

Ibaraki, Japan

Jun Ogata