Yasuhisa Niimi

Learn More
Voice-mail and video-mail systems for the Internet are becoming very popular, because the speech and video compression technology is greatly improved in these days. Asynchronous voice-mail system, however , does not seem attractive because it's not designed for discussions. We propose a network-based voice conference system which enables asynchronous and(More)
This paper describes a system to synthesize emotional speech based on TDPLOSA. The system has a database of VCV (vowel consonant vowel) segments for each of three emotions; anger, sadness and joy. These segments have emotional speech quality. The database contains four kinds of VCV segments which are prosodically balanced in the sense that their(More)
A voice communication system for asynchronous meetings held in non-real time will attract a broad range of users because it is convenient and easy to use with mobile devices. To realize such a system, however, it will be necessary to make possible the natural input of the progressive process of speech at the same time as facilitating the quotation of audio(More)
We propose a voice-accessible document system and the document format called RadioDoc, which will be simple for both novice and expert users to use. As novice users often have no knowledge of the available commands or hesitate to use them, the RadioDoc system is designed so that they need not use any speech input at all. Expert users, comfortable with voice(More)
We propose a semi-automatic dialogue system generator from the Internet information contents. We classify the practical Web site into three classes of task: slot-filling, database search, and explanation. Using three levels of dialogue library for each task, our generator translates XML based Web site into VoiceXML, which controls a conversation between a(More)
This paper presents an approach to extraction of dialog acts and topics from utterances in a spoken dialog system. Two knowledge sources are used to describe the dialog history. One is a transition network of dialog acts and the other is a tree of topics which might appear in domain communications. Dialog acts and topics are extracted through bottom-up and(More)