| 摘要 |
PROBLEM TO BE SOLVED: To provide a coarticulation feature extraction device, a coarticulation feature extraction method and a coarticulation feature extraction program capable of extracting unknown words with high phoneme identification accuracy which meets requirements from voice interaction and voice search. SOLUTION: In the coarticulation feature extraction device, a voice which is inputted from an input section 201 is converted to digital in an A-D converter 202, and Fourier analysis and filtering are performed in a feature analysis section 210, as a result, a voice spectrum data are obtained. Then, a coarticulation feature sequence being time sequence data of a coarticulation feature is extracted in a coarticulation feature extraction section 220. A speed component and an acceleration component are extracted from a deviation component of the coarticulation feature sequence in a coarticulation movement modification section 230. Coarticulation movement is modified by passing a neural network based on each component. Based on the modified coarticulation movement, corresponding words are searched in a word classification section 204, and voice recognition is performed. COPYRIGHT: (C)2010,JPO&INPIT
|
