• 음성과학
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• 제7권1호
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• pp.5-15
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• 2000

In this paper a detailed description of collecting Korean audio-video speech data is presented. The main aim of this experiment is to collect some audio-video materials which can be used for later experiments to estimate and model the actions of the visible human articulatory organs such as mouth, lips and jaw. We collect audio-video data from seven directions separately. Twelve markers are used to trace the movements.

• 음성과학
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• 제5권2호
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• pp.27-40
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• 1999

This study is concerned with articulatory and acoustic experiments about the change of the stop /t/ into its counterpart affricate before derivational and inflectional suffixes beginning with /(h)i/. The present phonetic results show that the stop consonant is articulatorily and acoustically completely neutralized into the underlying plain affricate. Thus this study provides another instance of complete neutralization of manner of articulation in Korean in addition to Kim and Jongman (1996).

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 하계종합학술대회 논문집(4)
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• pp.369-372
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• 2002

In this paper, we present an improved TTS synthesis system using articulatory synthesis and concatenative synthesis. In concatenative synthesis, segments of speech are excised from spoken utterances and connected to form the desired speech signal. We adopt LPC as a parameter, VQ to reduce the memory capacity, and TD-PSOLA to solve the naturalness problem.

• 말소리와 음성과학
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• 제3권4호
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• pp.33-43
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• 2011

The present study investigates supralaryngeal articulatory characteristics of denti-alveolar (coronal) stops /t, $t^h$, $t^*$/ and /n/ in /aCa/ context in Seoul Korean. An Electromagnetic Articulograph (EMA, Carstens) was used to explore kinematics of the consonants by examining the kinematic data of the tongue tip (the primary articulator for the coronal consonants), along with some additional supplementary position data of the tongue body, the tongue dorsum and the jaw. The results showed that the constriction duration was the most robust articulatory correlates of the three-way stop contrast with a pattern of /t/$t^h$/$t^*$/. The contrast was further reinforced by the tongue body position (higher for /$t^h$, $t^*$/) and the tongue tip opening displacement (less displaced for /$t^h$, $t^*$/). The articulation of /n/ was quite similar to that of the lenis /t/ in terms of the constriction duration, and it was different from the oral stops in that it was produced with larger tongue tip displacement and lower jaw position than the oral stops, indicating its weak articulatory nature. The results are also discussed in comparison with those of bilabial stops with implications that the three-way contrast may be kinematically expressed differently depending on the physiological constraints imposed on the primary articulator (the tongue tip versus the lips). The present study, therefore, provides new articulatory (kinematic) data of denti-alveolar consonants in Korean, and demonstrates that the three-way stops, that have been known to differ primarily in their laryngeal settings, are indeed produced with kinematic distinctions at the supralaryngeal level.

• 말소리와 음성과학
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• 제15권1호
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• pp.19-24
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• 2023

This study investigated acoustic (VOT) and articulatory characteristics of Korean velar stops in monosyllabic CV structures to examine how the three-way distinction is realized in the laryngeal and supralaryngeal domains and how the distinction is manifested in male versus female speakers' speech production. EMA data were collected from 22 speakers. In line with previous studies, male speakers preserved the three-way differentiation of velar stops (/k^*/</k/</k^h/) in terms of VOT while female speakers showed only a two-way distinction (/k^*/</k/=/k^h/). As for the kinematic characteristics, a clear three-way distinction was found only in male speakers' peak velocity measure in the C-to-V opening movement (/k^h/</k/</k^*/). For the other kinematic measures (i.e., articulatory closure duration, deceleration duration of the opening movement and the entire opening movement duration), male speakers showed only a two-way distinction between fortis and the other two stops. Female speakers did not show a three-way contrast in any kinematic measure. They showed a two-way distinction between lenis and the other two stops in C-to-V deceleration duration (/k^*/=/k^h/</k/), and a two-way distinction between fortis and lenis stops in the opening movement duration. An overall comparison of VOT and articulatory analyses revealed that the lenis-aspirated kinematic distinction is diminishing, driven by female speakers, in line with the loss of the lenis-aspirated distinction in VOT that could influence supralaryngeal articulation.

• 대한음성학회:학술대회논문집
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• 대한음성학회 1996년도 2월 학술대회지
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• pp.9-22
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• 1996

Among the various dysarthric subtypes, diagnosis of ataxic dysarthria is rendered when the speech characteristics include imprecise and irregular articulatory breakdowns, marked degree of speech rate impairment, overall monopitch and monoloudness, and respiratory-articulatory incoordination. Traditionally, speech pathologists have relied only upon their ‘ears’ to describe and evaluate the dysarthric speech. A statement of percentage of correct words identified by a listener do not provide so much more than an index of severity. Within the same perceptual dimension, a carefully constructed speech intelligibility test can specify patterns of errors. The patterns can contain a diagnostic value as well as Provide strategies for remediation. The phonetically transcribed texts on single words and a standard passage, 'kail' produced by an ataxic dysarthria are presented in this report, with an emphasis of the articulatory error analysis. Furthermore,, acoustic tools [e.g., spectrography to measure formant transitions, segment durations, consonant spectra, etc.] are utilized to serve as basic measures that objectively document patients' speech intelligibility, Finally, the treatment methods [e.g., spectrography as a visual feedback, gestural reorganization using pacing method, DAF (Delayed Auditory Feedback)] to modify the dysarthric behaviors are presented.

• 대한후두음성언어의학회지
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• 제13권2호
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• pp.124-131
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• 2002

Speech characteristics of patients with cleft palates are resonance disorders, articulatory disorders and voice disorders. The purpose of this study is to find the acoustic, physiological and articulatory characteristics of cleft palate speakers. Thirteen control groups and 3 cleft palate patients participated in this experiment. Test words were composed of simple vowels and consonants imbedded in low vowel /a/, /p 'ap'i/ and /sasi/ according to the evaluation experiments. CSL, Video fluoroscopy, Fiberscope and Nasometer were used to analyze VOT, vowel formants, profiles of articulator, VP port images and nasalance. The results are as follows : (1) The nasalance of cleft palate patients in the high vowel /i/, stop sounds and fricative sounds were 60%, 34.8% and 44.1%, respectively. These values were higher than those of the control group. (2) Posterior articulatory movements /k'a/ in patients with cleft palates showed backward movement in comparison with the control group on Video Fluoroscopic images and palatograms. These results suggested that patients with cleft palate have the compensatory oral sounds to close the VP port. (3) The VOT in patients with cleft palates was longer than that of the control group.

• 말소리와 음성과학
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• 제8권3호
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• pp.61-66
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• 2016

The purpose of this study is to examine the speaking rate(overall speaking rate and articulatory rate) of Parkinson's disease patients with palilalia(PDP). Palilalia is traditionally characterized by not only compulsive repetitions of words and phrases, but also by increased rate of speech based on auditory perception. Since Souques(1908) first characterized palilalia as fast speech rate from the perspective of auditory perception, few studies have evaluated PDP speech using acoustic methods. To compare the speech rate between PDP and normal subjects, we included five PDP and eight control subjects(age over 55), as well as the date acquired under reading tasks(standardized Korean paragraph). The difference in median of the overall speaking rate was not statically significant between the PDP group(median 5.25, IQR 1.30) and normal group(median 4.76, IQR 0.71). The PDP, however, had a significantly higher syllables per second on the articulatory rate(median 6.60, IQR 1.04) than normal subjects(median 5.60, IQR 0.52). Results indicated no differences in pause over 250msec and disfluency duration between the two groups. To provide useful insight into PDP speech, multiple levels of analysis should be employed.

• 재활치료과학
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• 제9권1호
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• pp.91-99
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• 2020

목적 : 본 연구의 목적은 IOPI 조음 근력 강화 훈련 프로그램이 경직형 마비말장애 환자들의 조음기관(혀, 입술) 근력 상승, 조음 정확도, 조음 교대운동 속도, 규칙성 및 정확도 변화에 끼치는 효과에 대해 연구하고자 하였다. 연구 방법 : 본 연구는 제주에 거주하는 경직형 마비말장애 환자 3명을 대상으로 제주 소재의 대학병원 언어치료실에서 기초선 단계, 7주간 주3회씩 1회기당 30분씩 중재를 한 후에 사후 평가를 실시하여 혀와 입술의 근력, SMST 조음선별검사 중 /ㄹ, ㅅ, ㅈ/ 조음 정확도, 조음 교대운동 속도, 규칙성 및 정확도 변화를 연구하는 단일대상연구를 실시하였다. 결과 : IOPI 조음 근력 강화 훈련 프로그램을 경직형 마비말장애 환자들에게 실시한 이후에 조음기관 근력, /ㄹ, ㅅ, ㅈ/ 조음동안 정조음 산출 수, 조음 교대운동 검사 결과 초당 /퍼/, /터/, /커/, /러/, /긍/, /아/, /퍼터커/ 산출 횟수의 증가와 조음 규칙성과 조음 규칙성 및 정확성에서 긍정적인 변화가 나타났다. 결론 : 본 연구 결과, IOPI 조음 근력 강화 훈련 프로그램이 경직형 마비말장애 환자들의 조음 정확도, 조음 교대운동 속도, 규칙성 및 정확도 향상을 도모하였으며, 추후 IOPI를 다양한 하위 유형의 마비말장애 환자에게 실시하여 각 하위 유형 간 차이를 비교하고, 마비말장애의 가장 대표적인 뇌성마비 아동들에게 가정에서 IOPI를 활용한 조음기관 기능 훈련을 연계한 프로그램 적용 이후 조음 능력의 변화에 대해 연구한다면 매우 유용할 것으로 사료된다.

• 음성과학
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• 제11권1호
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• pp.65-72
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• 2004

The force of articulation is different between voiced and voiceless consonants in the binary opposition system. However, the Korean voiceless stop consonants have a triple opposition system: lenis, aspirated, and glottalized. The aim of this study is to find the primary distinctive feature between the force of articulation and the aspiration for the three different types of Korean stops. Two native speakers of the Seoul dialect participated to this study. The corpus was composed of less than eight syllabic words containing consonants in word-initial position and intervocalic position. Radiocinematography and Mingography were used to analyze the articulatory tension and acoustic characteristics. Korean stops have independent features of articulatory tension and aspiration, in which the indices are different according to position. However, in this system which does not have the opposition of sonority, the force of articulation is the primary distinctive feature and the feature of aspiration is subsidiary.