Minhwa Chung


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Dysarthric Speech Database for Development of QoLT Software Technology
Dae-Lim Choi | Bong-Wan Kim | Yeon-Whoa Kim | Yong-Ju Lee | Yongnam Um | Minhwa Chung
Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC'12)

This paper describes the creation of a dysarthric speech database which has been done as part of a national program to help the disabled lead a better life ― a challenging endeavour that is targeting development of speech technologies for people with articulation disabilities. The additional aims of this database are to study the phonetic characteristics of the different types of the disabled persons, develop the automatic method to assess degrees of disability, and investigate the phonetic features of dysarthric speech. For these purposes, a large database of about 600 mildly or moderately severe dysarthric persons is planned for a total of 4 years (2010.06. 01 ~ 2014.05.31). At present a dysarthric speech database of 120 speakers has been collected and we are continuing to record new speakers with cerebral paralysis of mild and moderate severity. This paper also introduces the prompting items, the assessment of the speech disability severity of the speakers, and other considerations for the creation of a dysarthric speech.

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Korean Children’s Spoken English Corpus and an Analysis of its Pronunciation Variability
Hyejin Hong | Sunhee Kim | Minhwa Chung
Proceedings of the Eighth International Conference on Language Resources and Evaluation (LREC'12)

This paper introduces a corpus of Korean-accented English speech produced by children (the Korean Children's Spoken English Corpus: the KC-SEC), which is constructed by Seoul National University. The KC-SEC was developed in support of research and development of CALL systems for Korean learners of English, especially for elementary school learners. It consists of read-speech produced by 96 Korean learners aged from 9 to 12. Overall corpus size is 11,937 sentences, which amount to about 16 hours of speech. Furthermore, a statistical analysis of pronunciation variability appearing in the corpus is performed in order to investigate the characteristics of the Korean children's spoken English. The realized phonemes (hypothesis) are extracted through time-based phoneme alignment, and are compared to the targeted phonemes (reference). The results of the analysis show that: i) the pronunciation variations found frequently in Korean children's speech are devoicing and changing of articulation place or/and manner; and ii) they largely correspond to those of general Korean learners' speech presented in previous studies, despite some differences.


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USC: Description of the SNAP System Used for MUC-5
Dan Moldovan | Seungho Cha | Minhwa Chung | Tony Gallippi | Kenneth J. Hendrickson | Jun-Tae Kim | Changhwa Lin | Chinyew Lin
Fifth Message Understanding Conference (MUC-5): Proceedings of a Conference Held in Baltimore, Maryland, August 25-27, 1993