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Audiology and Speech Research > Volume 12(4); 2016 > Article
Audiology and Speech Research 2016;12(4): 260-268.
Published online: October 31, 2016.
doi: http://doi.org/10.21848/asr.2016.12.4.260
만 3~6세 아동의 모음 포만트, 모음 공간 및 말 명료도 특성
심화영1, 최철희1,2,3,4, 최성희1,2,3,4
1대구가톨릭대학교 의료보건대학원 언어청각치료학과
2대구가톨릭대학교 의료과학대학 언어청각치료학과
3대구가톨릭대학교 의료과학대학 생체모방감각제어연구소
4대구가톨릭대학교 의료과학대학 가톨릭 청각음성언어센터
Characteristics of Vowel Formants, Vowel Space, and Speech Intelligibility Produced by Children Aged 3-6 Years
Hwa-Yeong Sim1, Chul-Hee Choi1,2,3,4, Seong Hee Choi1,2,3,4
1The Graduate School of Medical Science, Catholic University of Daegu, Gyeongsan, Korea
2Departments of Audiology and Speech-Language Pathology, Catholic University of Daegu, Gyeongsan, Korea
3Research Institute of Biomimetic Sensory Control, Catholic University of Daegu, Gyeongsan, Korea
4Catholic Hearing Voice Speech Center, Catholic University of Daegu, Gyeongsan, Korea
Correspondence  Seong Hee Choi ,Tel: +82-53-850 2542, Fax: +82-53-359 0780, Email: shgrace@cu.ac.kr
Received: June 12, 2016; Revised: July 15, 2016   Accepted: October 7, 2016.  Published online: October 31, 2016.
This study measured vowel formants and vowel space area from 3 to 6 year-old Korean children in Jeju Island to investigate their characteristics of vowel production and speech intelligibility.
A total of 80 children (10 boys and 10 girls for each age) participated. For obtaining the formants, 7 Korean vowels (/a/, /e/, /i/, /o/, /u/, / m/, /^/) were used. Vowel space areas (triangular, quadrangular) and speech intelligibility were calculated and compared based on gender and age.
Results showed that F1 and F2 of / e/ and /i/ vowels were significantly different as age. In particular, front vowel /e/ and /i/ was significantly lower in 3 years of age but was gradually increased with age. For gender, F2 of vowel /a/ and /e/ were significantly higher in girls while F2 of vowel /i/ was significantly higher in boys (p < 0.05). With respect to vowel space area, significant differences were found in ages (p < 0.05) whereas no differences in gender (p > 0.05). Speech intelligibility was significantly different in age (p < 0.05) while no significant difference was observed in gender (p > 0.05). Significant relationships were found between triangular vowel space areas (r = 0.299, p < 0.01) or quadrilateral vowel space areas (r = 0.570, p < 0.01) and speech intelligibility.
Accordingly, quadrilateral vowel space area composed of / i-e-a-u/ was more sensitive than triangular vowel space area composed of /i–a-u/, reflecting the vowel movement space and speech intelligibility objectively.
Key Words: Formant frequency, Vowel space, Speech Intelligibility, Children.
중심단어: 포만트주파수· 모음공간· 말명료도· 아동
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