• Phonetics and Speech Sciences
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• v.5 no.4
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• pp.195-200
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• 2013

This study investigates formant transition shapes of Korean front vowels produced by native speakers of Seoul Korean. Sixteen speakers (eight male and eight female speakers) produced [pVt] syllables where the vowels were [i, e, ɛ]. F1, F2, and F3 transition shapes were estimated by presenting formant values at 11 points by dividing the vowel duration into 10 different time intervals. The results indicated that the male and female speakers overall demonstrated similar formant transition shapes and measurement points arriving at the maximum and minimum formant values for the three front vowels. As for the vowels [e] and [ɛ], both male and female speakers showed similar formant values across the 11 measurement points and similar measurement points arriving at the maximum and minimum values, indicating that the two Korean vowels have been merged not only in the steady-state formant values, but also in the dynamic transition shapes.

• Proceedings of the KSPS conference
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• 2003.10a
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• pp.169-172
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• 2003

The purpose of this study was to provide preliminary data on the acoustical differences of one syllable words spoken by speakers with different language backgrounds. 20 native speakers of Korean and English were asked to read 7 one-syllable words written in their native language. The phonetic and phonemic characteristics of 7 words were similar between two languages. The ratio of duration of the body (onset+nucleus) and the rhyme(nucleus+coda) relative to the duration of each syllable were calculated using CSL (Computerized Speech Laboratory). The results corresponds to the body-coda structure of the Korean syllable which is supported by the recent experimental psychological studies. More acoustic studies on the Korean syllable structure are required to establish clinical foundation for the phonological awareness and the reading intervention programs.

• Proceedings of the KSPS conference
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• 2003.10a
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• pp.175-179
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• 2003

In order to produce a high quality (intelligibility and naturalness) synthesized speech, it is very important to get an accurate grapheme-to-phoneme conversion and prosody model. In this paper, we analyzed Chinese texts using a segmentation, POS tagging and unknown word recognition. We present a grapheme-to-phoneme conversion using a dictionary-based and rule-based method. We constructed a prosody model using a probabilistic method and a decision tree-based error correction method. According to the result from the above analysis, we can successfully select and concatenate exact synthesis unit of syllables from the Chinese Synthesis DB.

• Proceedings of the IEEK Conference
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• 1999.11a
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• pp.672-675
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• 1999

In this paper, we propose a MLP neural network architecture and feature extraction for Korean syllable recognition. In the proposed syllable recognition system, firstly onset is classified by onset classification neural network. And the results information of onset classification neural network are used for feature selection of imput patterns vector. The feature extraction of Korean syllables is based on sonority. Using the threshold rate separate the syllable. The results of separation are used for feature of onset. nucleus and coda. ETRI's SAMDORI has been used by speech DB. The recognition rate is 96% in the speaker dependent and 93.3% in the speaker independent.

• Journal of the Korean Institute of Telematics and Electronics B
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• v.31B no.4
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• pp.1-8
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• 1994

In this paper, we propose an efficient two-step pattern matching method which promises shape distortion-tolerant recognition of handwritten of handwritten Hangul syllables. In the first step, nonlinear shape normalization is carried out to compensate for global shape distortions in handwritten characters, then a preliminary classification based on simple pattern matching is performed. In the next step, nonlinear pattern matching which achieves best matching between input and reference pattern is carried out to compensate for local shape distortions, then detailed classification which determines the final result of classification is performed. As the performance of recognition systems based on pattern matching methods is greatly effected by the quality of reference patterns. we construct reference patterns by combining the proposed nonlinear pattern matching method with a well-known averaging techniques. Experimental results reveal that recognition performance is greatly improved by the proposed two-step pattern matching method and the reference pattern construction scheme.

• Proceedings of the KSPS conference
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• 1996.10a
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• pp.542-547
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• 1996

Prosodic characteristics of natural speech, especially intonation, in many cases represent specific feelings of the speaker at the time of the utterance, with relatively vast variations of speaking styles over the same text. We analyzed a collected speech corpus, recorded with ten Slovene speakers. Interpretation of observed intonation contours was done for the purpose of modelling the intonation contour in synthesis process. We devised a scheme for modeling the intonation contour for different types of intonation units based on the results of analyzing intonation contours. The intonation scheme uses a superpositional approach, which defines the intonation contour as the sum of global (intonation unit) and local (accented syllables or syntactic boundaries) components. Near-to-natural intonation contour was obtained by rules, using only the text of the utterance as input.

• MALSORI
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• no.40
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• pp.29-49
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• 2000

This study has two aim: one is to clarify the restructuring of English in utterance and the other is to make use of text-setting to be applied to getting accustomed to the English rhythm and pronunciation. Clitics prove to play a crucial role on the English restructuring, and are found to be attached to their previous and to their next head or host, thus forming, respectively, an on-cliticized rhythm, trochee and a pro-cliticized rhythm, iambus. En-cliticization proves to be preferred to pro-cliticization in most types of English rhythms. Accordingly, the restructuring turn out to occur all over the levels of the Prosodic Hierarchy. That is, syllables, words and clitic groups are restructured in poetry as well as in song words, which means the necessity of restructuring throughout the levels of the Prosodic Hierarchy from the syllable to the utterance. The present study suggests a good use of a rhythmic textsetting for learners of English to get accustomed to the stress-timed rhythm as well as to such changes in pronunciation as reductions, deletions, resolutions, contractions, and rhythms in English.

• MALSORI
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• no.42
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• pp.71-88
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• 2001

This study is on the constraints of English Poetic Meter. In English poems, the metrical pattern doesn't always match the linguistic stress on the lines. These mismatches are found differently among the poets. The peaks mismatched with the weak metrical position are divided into the two ways according as they are adjacent to the boundary of a phonological domain or not. PAF and $^*UV$] are suggested for the mismatched peak which are not adjacent to the boundary of a phonological domain ; $^*Peak$] and BT for the mismatched peak which are adjacent to the boundary of a phonological domain. For the lexical stress mismatched with the weak metrical position, $^*W{\;}{\Rightarrow}{\;}Strength$ is set up by the concept of the strong syllable. $MPS{\;}{\Rightarrow}{\;}\Phi_{max}$ for the metrical position size can replace the resolution which is used to control the number of syllables in English poems. These constraints show the different hierarchies among the poets.

• MALSORI
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• no.45
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• pp.15-22
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• 2003

This study is a kind of a preliminary study to develop naturalness of dialog TTS system. In this study, as major characteristics of politeness in Korean, temporal(total duration of utterances, speech rate and duration of utterance final syllables) and F0(mean F0, boundary tone pattern, F0 range) features were discussed through acoustic analysis of recorded data of semantically neutral sentences, which were spoken by ten professional voice actors under two conditions of utterance type - namely, normal and polite type. The results show that temporal characteristics were significantly different according to the utterance type but F0 characteristics were not.

• Phonetics and Speech Sciences
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• v.6 no.4
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• pp.117-123
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• 2014

This study investigated the intonation patterns of accentual phrase in Jeju dialect. 9 speakers (Experiment 1) and 6 speakers (Experiment 2) read a carrier sentence '__ youngah miwonghumnida' with a target accentual phrase varying its number of syllables from 1 to 8. The results showed that like Seoul dialect pattern could be the basic pattern of accentual phase in Jeju dialect even though several differences were observed in the realization of each tone: Flat staircase-like tones in L, M, and even in H were often observed, and a very small difference in F0 between intial L and +H was found in many speakers. For some of these differences, this paper tried to give an explanation still in the Intonational Phonology framework. However, introducing M tone as a lexical tone was also suggested as one possible solution. Finally, unlike Seoul dialect, most speakers showed pattern in an accentual phrase beginning with a strong consonant, i.e., aspirated and unaspirated obstruents including /h/ and /s/.