• Title, Summary, Keyword: 성별 음향학적 차이

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Glottal Spectrum Analysis According to Speaking volume (발성크기에 따른 Glottal Spectrum 성분 분석)

  • Lee Yoonjoo;Cho Namsu;Bae Myungjin
    • Proceedings of the Acoustical Society of Korea Conference
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    • pp.53-56
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    • 2001
  • 사람은 연령, 성별 등에 따라 성도(vocal tract), 성대(vocal cord, 혹은 vocal fold), 비강(nasal tract)등 발성기관의 차이가 있고, 이는 음성의 음색, 높낮이 등 음향 특성에 영향을 미치며, 시간이 지나감에 따라 변하는 특성을 가지고 있다. 예를 들어, 발성기관의 차이가 큰 남성과 여성은 동일한 단어를 발성하더라도 음향학적으로 매우 큰 차이를 보이며, 이러한 특성은 다른 문장 발성 시에도 음향학적으로 일정한 영향을 미치게 되므로 정적특성이라 한다. 본 논문에서는 이러한 정적특성 중 음성의 발성크기에 따른 Glottal Spectrum을 비교 $\cdot$분석 하고자 한다.

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Comparison of Male/Female Speech Features and Improvement of Recognition Performance by Gender-Specific Speech Recognition (남성과 여성의 음성 특징 비교 및 성별 음성인식에 의한 인식 성능의 향상)

  • Lee, Chang-Young
    • The Journal of the Korea institute of electronic communication sciences
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    • v.5 no.6
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    • pp.568-574
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    • 2010
  • In an effort to improve the speech recognition rate, we investigated performance comparison between speaker-independent and gender-specific speech recognitions. For this purpose, 20 male and 20 female speakers each pronounced 300 isolated Korean words and the speeches were divided into 4 groups: female, male, and two mixed genders. To examine the validity for the gender-specific speech recognition, Fourier spectrum and MFCC feature vectors averaged over male and female speakers separately were examined. The result showed distinction between the two genders, which supports the motivation for the gender-specific speech recognition. In experiments of speech recognition rate, the error rate for the gender-specific case was shown to be less than50% compared to that of the speaker-independent case. From the obtained results, it might be suggested that hierarchical recognition of gender and speech recognition might yield better performance over the current method of speech recognition.

Clinical Usefulness of Ultrasonography in the Diagnosis of Fatty Liver (지방간 진단에 있어 초음파 검사의 임상적 유용성 연구)

  • An, Hyun;Lee, Hyo Yeong
    • Journal of the Korean Society of Radiology
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    • v.13 no.3
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    • pp.349-357
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    • 2019
  • The purpose of this study was to evaluate the clinical significance of ultrasonographic classification of fatty liver in three grades. From June 2018 to April 2019, 1047 patients (818 males and 229 females) diagnosed as fatty liver among 3607 patients who underwent abdominal ultrasonography at Busan screening center. Ultrasonography was classified into three grades: Grade I (mild fatty liver), Grade II (moderate fatty liver), and Grade III (severe fatty liver) according to the degree of parenchyma texture, acoustic attenuation, Obesity index, hematological test, and metabolic syndrome. The average age of men in each sex increased with the increase of the fatty liver. Body mass index (BMI) and waist circumference were significantly increased in both men and women (p=.000). hematological analysis showed that AST, ALT, ${\gamma}-GTP$, TG, fasting blood sugar, and glycated hemoglobin were significantly different from each other (p<.05). In women, ALT, ${\gamma}-GTP$ and TG showed a significant difference with increasing fatty liver (p<.05). The prevalence of metabolic syndrome was significantly increased in both sexes as the grade of fatty liver increased (p=.000). Based on the results of this study, it is suggested that the use of ultrasound - guided fatty liver according to severity may be useful for the treatment and follow - up of fatty liver if the liver grade is divided in consideration of hematological variables and metabolic syndrome.

Age- and Gender- Specific Reference Levels for Hearing Thresholds of Normal Aging in Korean (한국인의 정상적인 노화에 의한 성별 연령별 순음청력에 의한 기준청력)

  • Kim Sung Hee;Shin Jong Heon;Yeo Chang Ki;Han Young Kyung;Lee Jung Ki;Jarng Soon Suck
    • The Journal of the Acoustical Society of Korea
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    • v.24 no.6
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    • pp.353-357
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    • 2005
  • Declining auditory performance with advanced age is a well known and common problem that is becoming more Prevalent due to the increasing number of elderly people in our society. We introduce a novel ARCISM (Audiogram Result Computer Input. Save & Management software) data management program which enables the assessment of the risk of past history of hearing impairment on the basis of known risk factors. This study investigates the reference levels of pure tone hearing threshold of normal aging in Korean and the difference between fenders. The subjects were carefully selected by questionnaire and absence of any history of otologic infection, noise exposure. and ototoxic drug among 1603 subjects. who visited Health Promotion Center in Daegu Fatima Hospital for one year. The results show (1) hearing sensitivity declines with age. (2) higher frequency shows steeper slope of hearing declines than lower frequency. and (3) there were more hearing loss at 4 and 8 kHz in men than in women. Due to the ARCISM program. it was possible to manage huge data of hearing results and to obtain the reference level of a9e-related hearing declines. Furthermore, we expect that the results of this study can be the fundamental data for hearing rehabilitation for the elderly and for developing suitable hearing aids for Korean.