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노화에 따른 발화 시 입술움직임의 변화: 이중모음을 중심으로
박희준(Hee-June Park) 한국음성학회 2021 말소리와 음성과학 Vol.13 No.1
본 연구에서는 노화에 따른 발화 시 입술 움직임의 변화를 알아보고자 하였다. 연구대상으로 평균 69세의 노인 여성 15명과 평균 22세의 젊은 여성 15명을 선정하였다. 입술 움직임을 측정하기 위해 이중모음 발화시 입술 움직임을 녹화하여 스틸 이미지로 저장한 다음 입술의 움직임이 최소인 부분과 최대한 길이를 영상분석 소프트웨어를 이용하여 pixel 단위로 수작업으로 분석하여 비교하였다. 임상적 활용성을 위해 자동화 알고리즘을 적용하여 소프트웨어를 제작했으며 수작업의 결과와 비교하였다. 연구결과 노년층의 경우 청년층에 비해 이중모음 과제에서 입술의 가로 및 세로의 길이 범위가 작은 것을 알 수 있었다. 수작업과 자동화 방법의 상관관계를 측정한 결과 강한 정적 상관관계가 나타나 두 방법 모두 입술 윤곽 추출 시 유용함을 알 수 있었다. 이상의 결과를 바탕으로 노화가 진행됨에 따라 발화 시 입술의 범위가 작아지는 것을 알 수 있었다. 따라서 노화가 진행되기 전 간단하게 입술의 움직임을 측정하여 본인의 상태를 모니터링하고 입술 범위를 유지할 수 있는 운동을 실시한다면 노화로 인한 발음 문제를 예방할 수 있을 것이다. This study investigated the change in lip movement during speech according to aging. For the study, 15 elderly women with an average of 69 years and 15 young women with an average of 22 years were selected. To measure the movement of the lips, the ratio between the minimum point and the maximum point of movement when pronouncing a double vowel was analyzed in pixel units using image analysis software. For clinical utility, the software was produced by applying an automated algorithm and compared with the results of handwork. This study found that the range of the width and length of lips in double vowel tasks was smaller for the elderly than that of the young. A strong positive correlation was found between manual and automated methods, indicating that both methods are useful for extracting lip contours. Based on the above results, it was found that the range of the lips decreased when ignited as aging progressed. Therefore, monitoring the condition of lip performance by simply measuring the movement of lips before aging progresses, and performing exercises to maintain lip range, will prevent pronunciation problems caused by aging.
내전형 연축성 발성장애 화자의 구강 및 후두 교호운동 특성
박희준(Hee June Park),김근효(Geun Hyo Kim),배인호(In Ho Bae),권순복(Soon Bok Kwon) 한국언어치료학회 2014 言語治療硏究 Vol.23 No.3
Purpose: This study investigates characteristics of adductor spasmodic dysphonia (ADSD) speakers' laryngeal diadochokinesis (DDK). ADSD is a voice disorder characterized by involuntary movements or spasms of one or more muscles of the larynx during speech. There is no accurate diagnosis for ADSD. The assessment of laryngeal DDK in ADSD requires understanding the factors that affect balanced vocal production. Methods: A specific task was performed to compare 24 ADSD female speakers with 24 normal speakers. To perform the laryngeal DDK task, both groups were asked to speak /pa, ta, ka, a/ as fast as possible and as regularly as possible. The voices were recorded by Motor Speech Profile 5141 (CSL 4500), and stable sections were analyzed for four seconds. To determine statistical similarity, an independent samples t-test was conducted. Results: There were no rate or regularity differences between the two groups when the participants spoke /pa, ta, ka/ as oral DDK. On the other hand, when they spoke /a/ as laryngeal DDK, differences arose. The ADSD speakers showed slower laryngeal DDK rate and less accuracy in comparison with the normal speakers. Conclusions: The result shows that laryngeal DDK is helpful in the diagnosis of ADSD.
박희준(Hee June Park),유재연(Jae Yeon Yoo) 한국언어치료학회 2013 言語治療硏究 Vol.22 No.3
It is very important to use computer software for voice (speech) assessment and therapy. Although there is various commercial software for voice assessment, this software is rarely used because it is expensive. The aim of this study is to examine open source software (Praat, WaveSurfer, Audio Masking System, and PreLingua) and to investigate the efficacy of this software for speech therapy. This freeware has wide applicability to speech therapy. 1) It is capable of measuring various acoustic parameters including F0, jitter, shimmer, NHR, voice range, and formant. 2) This freeware is effective in providing realtime visual feedback. 3) This freeware is useful to measure diadochokinetic rate and regularity of dysarthric speech. 4) The masking is useful in treating functional voice disorder and stuttering. 5) It is effective in increasing children's motivation and attention ability by using game software.
마비성구어장애 화자의 조음밸브 교호운동에 관한 공기역학 및 음향학적 특징
박희준(Hee-June Park),권순복(Soon-Bok Kwon),왕수건(Soo-Geun Wang),정옥란(Ok-Ran Jeong) 한국음성학회 2008 음성과학 Vol.15 No.2
This study was to investigate diadochokinetic (DDK) rate, regularity and mean flow rate of articulation valves in dysarthria. DDK rate, mean airflow rate (MFR) and regularity of DDK syllable repetitions of vocal function /ihi/, tongue function /ta/, velopharyngeal function /bm/, and labial function /pa/ in 24 normal and dysarthric speakers were measured. Aerophone Ⅱ and Motor Speech Profile were used for data recording and analysis. The results of the findings were as follows: First, there were significant differences between the dysarthria and the normal group in DDK rate. DDK rates in ataxic dysarthria were the lowest and spastic, flaccid, and hypokinetic dysarthria followed in sequence. Second, there was a significant difference between the dysarthria and the normal group in DDK regularity. Third, there was a significant difference between dysarthria groups and normal group in DDK MFR. Finally, there was a significant difference between the 4 groups of dysarthria and the normal group in DDK air flow tracking. The results of this study can be guidelines for normal DDK rate, regularity and flow rate in dysarthria groups. In addition, their differential diagnoses and descriptions are important to make a decision on medical and behavioral management of the individuals with disorders according to DDK characteristics.