Miharu Sakuragi

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Nowadays mobile devices maintain a lot of private information such as payment information, personal photographs and so on. In Japan, people are starting to use cellular phones as means of payment like pre-paid cards. If owners lost these devices and someone else picked it up, what would happen? To solve this problem, password is now widely used. In the case(More)
Conventional speaker-independent HMMs ignore the speaker di erences and collect speech data in an observation space. This causes a problem that the output probability distribution of the HMMs becomes vague so that it deteriorates the recognition accuracy. To solve this problem, we construct the speaker subspace for an individual speaker and correlate them(More)
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