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We developed a CALL (computer-aided language learning) system for teaching the pronunciation of Japanese long vowels, the mora nasal and mora obstruents to nonnative speakers of Japanese. Long vowels and short vowels are spectrally almost identical but their phone durations differ significantly. Similar conditions exist between mora nasals and non-mora(More)
We have built a prototype Automatic Dialogue Summarizer (ADS) | a real{time system that automatically generates simple summaries of completely spontaneous human{human spoken dialogues without the machine interrupting the natural ow of conversation. Two dialogue participants (client and clerk) discuss conference room reservations (CRR) in Japanese, and the(More)
We examined pitch patterns within and across intonational phrases of Japanese read aloud by native and non-native (Mandarin Chinese) speakers. Japanese speakers change pitch ranges for each intonational phrase. The relative pitch ranges of neighboring intonational phrases indicate which intonational phrase belongs to which intonational phrase group. Chinese(More)
This paper presents our attempt to model physiological transition effect on syllable F0 contour in order to improve lexical tone recognition performance for Mandarin Chinese. We suggested that a syllable F0 contour consists of three segments: onset course, tone nucleus and offset course. Among the three segments, only tone nucleus contains key features for(More)
We compared pitch patterns of Japanese intonational phrases spoken by a native speaker of Chinese. Several types of pitch errors were distinguished according to pitch contour shapes within and across intonational phrases. These shapes differ categorically from one another—for instance, the learner uses flat contours while the native uses hump-like contours.(More)
We used a command-response additive F0 model to analyze F0 patterns of Japanese spoken by native speakers of Mandarin Chinese. Compared to native speakers of Japanese, we found that Chinese speakers exhibit the following characteristics: (a) higher pitch, (b) more phrases, (c) bunsetsu decomposition, and (d) utterance-final plunging. These characteristics(More)