• 대한후두음성언어의학회지
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• 제7권1호
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• pp.20-26
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• 1996

The purposes of this study were to analyze the sound of bird's frequency region and pattern and to discuss hearing impaired children's auditory discrimination. The results were ie follows; 1) The sounds of bird's frequency region were divided into Low(below 1, 000Hz), Mid(between 1, 000 and 4, 000Hz) and High(between 2, 000 and 4, 000Hz). 2) The sounds of bird, which were same, long, high pattern, were in Mid ＆ High. Short and high pattern were above High.

• 정보관리학회지
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• 제32권1호
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• pp.297-316
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• 2015

본 연구는 청각장애 대학생들의 도서관 이용행태와 정보요구를 파악하여, 그들에게 적절한 도서관 서비스 프로그램 등을 개발하기 위한 기초자료를 수립하는데 목적이 있다. 그 목적을 달성하기 위해 청각장애 대학생에게 설문조사와 면접을 실시, 총 155명의 데이터를 수집하였고, 그 데이터를 빈도분석, 교차검증, t-검증, 일원분산분석으로 분석하였다. 연구결과, 청각장애 대학생의 성별, 학년, 장애등급, 출신학교, 학과, 사용 보장구에 따라 도서관 이용형태(정보수집의 어려움, 도서관 이용횟수, 도서관 이용목적, 도서관을 이용하지 않는 이유) 전 영역에서 유의미한 차이를 발견하였다. 그리고 청각장애 대학생의 사용 보장구의 종류, 출신학교, 장애등급에 따른 정보요구의 차이를 분석한 결과, 사용 보장구에 따른 정보요구(최신 자료 확충, 이용자 교육홍보, 수화통역사, 홈페이지 개선, 열람환경개선)는 전 영역에서 유의미한 차이를 보였고, 출신학교에 따른 정보요구(이용자 교육홍보, 수화통역사 배치)와 장애등급에 따른 정보요구(이용자 교육홍보, 열람환경 개선)에서도 일부 유의미한 차이를 보였다.

• 재활복지공학회논문지
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• 제11권3호
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• pp.247-252
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• 2017

이 연구의 목적은 SVM 기술에 근거한 시각 보조기에 주로 의존하는 청각 장애인을 위한 영어 모음 발음에 대한 시각 교습 방법을 제안하는데 있다. 귀로 듣기 어려운 소리로부터 SVM 기술을 사용하여 소리 특징을 추출함으로써, 각 모음의 입술 모양이 추출되었다. 모음에 대한 입술 모양의 세련미는 언어 학습자가 발음기의 움직임을 눈으로 쉽게 볼 수 있다는 점에서 유리하며, 청각 장애인을 위한 영어 모음을 학습하고 가르치는 데 유용할 것이다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2018년도 추계학술대회
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• pp.299-300
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• 2018

공공시설에서 청각장애인은 음성 알림을 제공받지 못하기 때문에 정보 획득의 수단으로 시설에 대한 전용 애플리케이션을 사용한다. 하지만, 각 시설마다 전용 애플리케이션을 사용해야하는 불편함이 있다. 본 논문에서는 청각장애인을 위한 알림 서비스 구독 방법을 제안한다. 제안하는 방법은 MQTT 프로토콜을 사용하여 알림 서비스를 설계하고, 애플리케이션을 통해 QR 코드를 스캔하면 알림 서비스를 구독한다. 알림 서비스를 구독한 청각장애인은 해당 알림 정보가 게시되는 경우 메시지를 전달받는다.

• 전기학회논문지
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• 제65권7호
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• pp.1263-1269
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• 2016

Hearing impaired persons are exposed to the danger since they can't be aware of many dangerous situations like fire alarms, car hones and so on. Therefore they need haptic or visual informations when they meet dangerous situations. In this paper, we design a dangerous sound detection engine for hearing impaired. We consider four dangerous indoor situations such as a boiled sound of kettle, a fire alarm, a door bell and a phone ringing. For outdoor, two dangerous situations such as a car horn and a siren of emergency vehicle are considered. For a test, 6 data sets are collected from those six situations. we extract LPC, LPCC and MFCC as feature vectors from the collected data and compare the vectors for feasibility. Finally we design a matching engine using an artificial neural network and perform classification tests. We perform classification tests for 3 times considering the use outdoors and indoors. The test result shows the feasibility for the dangerous sound detection.

• 한국컴퓨터정보학회논문지
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• 제24권2호
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• pp.193-200
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• 2019

Hearing impaired people are living in a voice culture area, but due to the difficulty of communicating with normal people using sign language, many people experience discomfort in daily life and social life and various disadvantages unlike their desires. Therefore, in this paper, we study a sign language translation system for communication between a normal person and a hearing impaired person using sign language and implement a prototype system for this. Previous studies on sign language translation systems for communication between normal people and hearing impaired people using sign language are classified into two types using video image system and shape input device. However, existing sign language translation systems have some problems that they do not recognize various sign language expressions of sign language users and require special devices. In this paper, we use machine learning method of artificial neural network to recognize various sign language expressions of sign language users. By using generalized smart phone and various video equipment for sign language image recognition, we intend to improve the usability of sign language translation system.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1998년도 추계학술대회
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• pp.171-172
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• 1998

Recent development of digital technology has offered new possibilities for noticeable advances of hearing aids. Using the digital technology, it is possible to equip hearing aids with powerful features such as multi-channel nonlinear compression amplification and the feedback cancellation, these are often difficult to implement with analog circuits. Still, speech in noise is one of the major complaints of not only hearing impaired persons but also normal listeners. This paper describes speech intelligibility in background noise for both normal and hearing impaired listeners. Speech enhancement algorithms were implemented and compared for normal and sensorineural hearing impairment listeners.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1997년도 추계학술대회
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• pp.63-66
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• 1997

With the advent of high speed digital signal processing chips, new digital techniques have been introduced to the hearing instrument. This advanced hearing instrument circuitry has led to the need or and the development of new fitting approach. A number of different fitting approaches have been developed over the past few years, yet there has been little agreement on which approach is the "best" or most appropriate to use. However, when we develop not only new hearing aid, but also its fitting method, the intensive subject-based clinical tests are necessarily accompanied. In this paper, we present an objective method to evaluate and predict the performance of hearing aids without the help of such subject-based tests. In the hearing impairment simulation (HIS) algorithm, a sensorineural hearing impairment model is established from auditory test data of the impaired subject being simulated. Also, in the hearing impairment simulation system the abnormal loudness relationships created by recruitment was transposed to the normal dynamic span of hearing. The nonlinear behavior of the loudness recruitment is defined using hearing loss unctions generated from the measurements. The recruitment simulation is validated by an experiment with two impaired listeners, who compared processed speech in the normal ear with unprocessed speech in the impaired ear. To assess the performance, the HIS algorithm was implemented in real-time using a floating-point DSP.

• Journal of Audiology & Otology
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• 제23권3호
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• pp.129-134
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• 2019

Background and Objectives: Sine a self-reported questionnaire for hearing-impaired listeners is not available by Malay language yet, it is important to develop or translate any available existing questionnaires. The aim of this study was to translate, adapt and validate the Hearing Handicap Inventory for Adult (HHIA) to be used by the audiologist among the hearing-impaired population in Malaysia. Subjects and Methods: The HHIAs was translated to Malay language using forward-backward translation techniques by four-panellists (two for each level). The translated HHIA was then reconciled and harmonized for cultural aspects and content of the questionnaire by the researchers and two expert panels before being pilot-tested among 10 hearing-impaired patients. Questionnaire validation was conducted among 80 adults with a hearing loss to calculate for Cronbach's α (internal reliability), Spearman's correlation (inter-item correlation) and factor analysis. Results: None of the translated items were removed from the scale. The overall Cronbach's α was 0.964; 0.927 and 0.934 for both social and emotional subscales, respectively. The factor analysis (force-concept inventory) demonstrated a two-structure with a strong correlation between all items in either component 1 or 2, that resembled the original scale. The Mann-Whitney test revealed significantly higher scores for those adults with a hearing loss than those adults with normal hearing. Conclusions: The Malay HHIA has been successfully translated and validated for the purpose of determining the psychosocial aspects of adults with hearing loss in the local population.

• 대한청각학회지
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• 제23권3호
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• pp.129-134
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• 2019

Background and Objectives: Sine a self-reported questionnaire for hearing-impaired listeners is not available by Malay language yet, it is important to develop or translate any available existing questionnaires. The aim of this study was to translate, adapt and validate the Hearing Handicap Inventory for Adult (HHIA) to be used by the audiologist among the hearing-impaired population in Malaysia. Subjects and Methods: The HHIAs was translated to Malay language using forward-backward translation techniques by four-panellists (two for each level). The translated HHIA was then reconciled and harmonized for cultural aspects and content of the questionnaire by the researchers and two expert panels before being pilot-tested among 10 hearing-impaired patients. Questionnaire validation was conducted among 80 adults with a hearing loss to calculate for Cronbach's α (internal reliability), Spearman's correlation (inter-item correlation) and factor analysis. Results: None of the translated items were removed from the scale. The overall Cronbach's α was 0.964; 0.927 and 0.934 for both social and emotional subscales, respectively. The factor analysis (force-concept inventory) demonstrated a two-structure with a strong correlation between all items in either component 1 or 2, that resembled the original scale. The Mann-Whitney test revealed significantly higher scores for those adults with a hearing loss than those adults with normal hearing. Conclusions: The Malay HHIA has been successfully translated and validated for the purpose of determining the psychosocial aspects of adults with hearing loss in the local population.