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The performance of English automatic speech recognition systems decreases when recognizing spontaneous speech mainly due to occurring multiple pronunciation variants in the utterances. Previous approaches address the multiple pronunciation problem by modeling the alteration of the pronunciation on a phoneme to phoneme level. However, the phonetic transformation effects induced by the pronunciation...
An ultrasonic localization system is described in the paper. To the best of our knowledge, this is the first system that can simultaneously identify not only the 3D position, but also the velocity of a moving object. The proposed system uses an original and innovative method called Extended Phase Accordance Method (EPAM) that can precisely identify the distance between an ultrasonic microphone and...
We proposed a dialog system using a weighted finite-state transducer (WFST) in which user concept and system action tags are input and output of the transducer, respectively. The WFST-based platform for dialog management enables us to combine various statistical models for dialog management (DM), user input understanding and system action generation, and then search the best system action in response...
In this paper, we describe the development of Chinese conversational segmented and POS-tagged corpora currently used in the NICT/ATR speech-to-speech translation system. Over 500 K manually checked utterances provide 3.5 M words of Chinese corpora. As far as we know, they are the largest conversational textual corpora; in the domain of travel. A set of three parallel corpora is obtained with the corresponding...
A bias-offset transconductor is known as a linear MOS transconductor. The transconductor requires some peripheral circuits, which are a floating voltage source and a biasing current source. This paper presents a design of a linear transconductor/multiplier for low-voltage and low-power operation with two techniques. One is a method to realize high-accuracy floating voltage source employing low-voltage...
For Global Navigation Satellite System (GNSS) technology, the accuracy of navigation signals (time reference signal) is very important. To improve the accuracy of the navigation signals, exact time control of the satellite and highly accurate clock synchronization between satellites and ground stations are required. JAXA plans to conduct a time synchronization experiment for future global navigation...
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