Abstract
This paper summarizes my 40 years of research on speech and speaker recognition, focusing on selected topics that I have investigated at NTT Laboratories, Bell Laboratories and Tokyo Institute of Technology with my colleagues and students. These topics include: the importance of spectral dynamics in speech perception; speaker recognition methods using statistical features, cepstral features, and HMM/GMM; text-prompted speaker recognition; speech recognition using dynamic features; Japanese LVCSR; robust speech recognition; spontaneous speech corpus construction and analysis; spontaneous speech recognition; automatic speech summarization; and WFST-based decoder development and its applications.
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