Spoken language systems
Speech processing research in Japan started in the 1940s. While it has produced high quality results, many works were described only in Japanese and were not necessarily made available to the global community. In the 1990s, research on spoken language processing became so successful that it was extended to large vocabulary, continuous speech recognition, corpus-based speech synthesis, spoken dialogue systems, multi-modal interfaces and speech-to-speech translation systems, which are all covered by this book. It is believed that most of the basic ideas and technologies behind current spoken language systems were established by 2000. This book provides a compendium of the prominent studies on such prototypes of spoken language systems developed in Japan. This book is a comprehensive introduction to the major works conducted at Japanese research institutes that are developing spoken language systems.
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Large Vocabulary Continuous Speech Recognition Efforts in Japan
Speech Recognition System in
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acoustic models adaptation agent-type algorithm analysis annotation scheme automatic beam search beamforming bigram cepstral cepstrum concept representation context-free grammar continuous speech recognition conversation corpus developed dialogue manager dictation system discourse markers estimated evaluation extracted F0 contour Figure focusee frequency function gesture grammar Information Processing Society input speech integration interaction Japan Japanese keywords Kyoto language model likelihood linguistic LVCSR MASCOTS-II method microphone array module morpheme multimodal interface N-gram Nakagawa node noise output parameters parsing performance perplexity phoneme phrase Proc prosodic prosodic features recognizer robot robust segments semantic sentences Society of Japan speaker recognition speaker verification speaker-independent speech corpus speech data speech database speech input speech recognition system speech synthesis speech translation spoken dialogue systems spontaneous speech synthesized speech task techniques Technology telephone templates tion topic transcription unknown word user utterance user's vector Viterbi search voice word recognition word sequence