| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the reduction in recognition rate of speech recognition processing regardless of difference of contents of choices or conditions such as a voice quality.SOLUTION: A speech recognition device includes: an acoustic model storage unit in which a plurality of sets of acoustic models obtained by collecting distributed states of frequency components of a plurality of phonemes used in a prescribed language, under a plurality of different conditions are stored; a choice list storage unit in which a choice list including choice data and acoustic model specification information is stored; an acoustic model selection unit which selects a set of acoustic models specified by the acoustic model specification information: a signal processing unit which extracts frequency components of a voice signal to generate a feature pattern; and a coincidence detection unit which performs speech recognition processing by comparing a feature pattern generated from at least a part of the voice signal with acoustic models corresponding to at least a part of the choice data, out of the selected set of acoustic models and outputs the speech recognition result.</p> |
