Patent ID: 7418385
Filing Date: 2008-08-26
Classification: G10L

Abstract:
1. A voice detection device comprising: myoelectric signal acquisition means for acquiring, from a plurality of regions, myoelectric signals generated at a time of a vocalization operation; parameter calculation means for calculating parameters, each corresponding to a predetermined time period, based on a potential of said myoelectric signals which are acquired by said myoelectric signal acquisition means; vowel vocalization recognition means for calculating an amount of temporal change which specifies a degree of change between a parameter calculated by said parameter calculation means at a proximate time and a parameter calculated by said parameter calculation means at a previous time, and for specifying a timing of a vowel changing upon a comparison of said amount of temporal change and a predetermined threshold; and vowel specification means for detecting a change characteristic of said parameters before and after said timing of a vowel changing, based on said timing of said vowel changing which is specified by said vowel vocalization recognition means and said parameters which are calculated by said parameter calculation means, and for specifying a vowel corresponding to said vocalization operation, based on said change characteristic.