• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2019년도 제59차 동계학술대회논문집 27권1호
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• pp.15-16
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• 2019

본 논문은 청각 장애인들이 듣지 못하는 위험한 상황에 대해 목걸이 형태의 웨어러블 기기를 통해 소리를 감지 및 분류하고 알림을 주는 시스템을 구현하였다. 구현한 시스템은 소리를 감지 및 녹음하고 녹음 된 소리의 종류를 분류하여 소리의 정보를 진동과 함께 시각적으로 사용자에게 보여주어 위험한 상황을 대비할 수 있는 웨어러블 시스템이다.

• 한국사회복지학
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• 제66권3호
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• pp.297-319
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• 2014

본 연구의 목적은 시각, 청각, 지적 여성장애인의 자녀양육부담과 부모역할만족도의 관계를 살피고 자녀와의 의사소통이 이들 사이를 매개하는지를 검증함으로써 여성장애인의 양육부담을 경감시키고 효과적인 부모역할 수행 방안을 마련하는데 있다. 조사는 서울지역 장애인복지관과 여성장애인 관련 단체의 협조를 통해 총 13개 기관에 300부를 배포하였고, 청각장애 여성은 자기기입방식으로, 시각과 지적장애 여성들은 조사원이 읽어주고 대답하는 방식으로 210부를 회수하여 최종분석에는 187부가 사용되었다. 연구결과 양육부담은 부모역할만족도와 자녀와의 의사소통에 직접적인 부적(-) 관계를 형성하는 것으로 나타났다. 또한 자녀와의 의사소통은 양육부담이 부모역할만족도에 영향을 미치는 관계를 매개하고 있는 것으로 확인되었다. 따라서 여성장애인의 양육부담을 감소시키고 부모역할만족도를 증진시키는 동시에 자녀와의 의사소통 기술을 보다 강화하는 방안을 고려할 필요가 있다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.865-866
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• 2008

Despite the effort for affording hearing handicapped persons facility for living, the investigation of assistive devices which recognize the out of sight circumstance has been studied insignificantly. In this paper, a novel acoustic-aware system is suggested to forward the sudden noise occured by the appearance of a new context to a hearing-impaired persons.

• 대한의용생체공학회:의공학회지
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• 제19권6호
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• pp.623-629
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• 1998

일반전화기로 통화가 어려운 난청인에게 충분한 수신음량을 공급하기 위해서는 큰 증폭이 필요한데 큰 증폭은 하울링(howling)을 발생시킨다. 본 연구에서는 소리를 크게 증폭하면서 하울링을 억제하는 새로운 방법을 제안하고 이를 적용한 보청전화기를 개발하여 평가하였다. 통화수신 음성은 3개의 밴드로 나뉘어져 각각 독립적으로 증폭되어 난청인의 청력에 알맞게 적합(fitting)된다. 수신음성의 주파수는 카운터에 의하여 시간영역에서 모니터링되는데 카운터부는 비교기를 이용하여 수신 정현파를 구형파로 변환시키고 시간영역에서 구형파 수를 계수함으로써 주파수를 분석하여 하울링이 발행하는가를 판단한다. 전화기는 송수화기 구조가 결정되어 있고 송수신 주파수 범위가 제한되어 있으므로 하울링 또한 일정주파수 범위내 발생하게 된다. 계수기에 의해 하울링이 검출되면 중앙제어부는 해당대역의 증폭도를 빠르게 낮춤으로써 하울링을 억제시킨다. 시험결과 개발전화기는 하울링 없이 40dB 이상 증폭할 수 있으며 중고도 난청인의 어음인지력이 1음절어의 경우는 20%에서 60.8%로, 2음절어의 경우는 28.9%에서 78%로 향상되는 탁월한 개선 효과를 보였다.

• 대한의용생체공학회:의공학회지
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• 제31권5호
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• pp.385-394
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• 2010

Automatic gain control(AGC) is used in hearing aids to compensate for the hearing level as to reduced dynamic range. AGC is consisted of the main 4 factors which are compression threshold, compression ratio, attack time, and release time. This study especially focus on each individual need for optimum release time parameters that can be changed within 7 certain range such as 12, 64, 128, 512, 2094, and 4096ms. To estimate the effect of various release time in AGC, twelve normal hearing and twelve hearing impaired listeners are participated. The stimuli are used by one syllable and sentence which have the same acoustic energy respectively. Then, each of score of the word recognition score is checked in quiet and noise conditions. As a result, it is verified that most people have the different best recognition score on specific release time. Also, if hearing aids is set by the optimum release time in each person, it is helpful in speech recognition and discrimination.

• 대한의용생체공학회:의공학회지
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• 제27권5호
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• pp.282-290
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• 2006

We have developed a multi band digital hearing aid algorithm emphasizing feedback cancellation and a hardware module to evaluate the performance of our algorithm. The hearing aids should be able to compensate for individual hearing loss characteristics of hearing impaired person. Thus hearing aids need the function of multi-bands amplification and the capabilities of feedback cancellation that can remove howling caused by acoustic feedback. In this paper, we proposed a digital hearing aid algorithm which has multi-bands compensation using modified discrete cosine transform (MDCT) and can efficiently remove acoustic feedbacks. Moreover, we have developed digital hearing aid hardware module, which can evaluate hearing aid algorithms in real time operation. The developed algorithm and hardware module were verified through computer simulation and clinical tests. Through operational experiments, good performances in real time operation environment and an efficient howling cancellation were also observed. The developed hardware module can operate in stable condition and it is expected to become a good hardware platform for developing hearing aid algorithms.

• 복식
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• 제66권2호
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• pp.61-75
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• 2016

The purpose of this study was to develop interactive smart clothing based on visual and tactile sensitivities to promote non-verbal communication between people with hearing impairments. The study analyzed various cases of interactive smart clothing, different non-verbal communication tools, as well as results of user demand survey to extract essential factors. Then these factors were categorized into technology or design concept. The technological aspect of the development considered the following factors: the usability, detachability, purposiveness, and economic feasibility. The design aspect considered the following factors: the usability, detachability, formativeness and wearability. A prototype was designed considering the user's requirements. The developed prototype had sensors, Bluetooth technology, and gave access to wireless communication in order to enable non-verbal communication between people with hearing impairments.

• 융합신호처리학회논문지
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• 제14권4호
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• pp.235-242
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• 2013

청각, 언어장애인과 수화를 모르는 일반인과의 대화를 위해, 키넥트를 이용한 모션 인식을 통해 수화를 번역하여 주는 시스템을 개발하였다. 키넥트의 주요기능을 이용하여 수화를 번역하는 알고리즘들을 설계하고, 다양한 수화자에 대한 수화번역의 정확도를 높이기 위한 방법으로서 길이정규화와 팔꿈치정규화의 두 가지 정규화 방법을 사용하였다. 그리고 이러한 정규화 방법이 효과적인지 알아보기 위해서 실제 수화데이터를 차트로 비교하였다. 또한 10개의 데이터베이스를 입력하여 간단한 수화부터 복잡한 수화까지 직접 실시하고, 이를 키넥트로 인식하여 번역을 해봄으로서 프로그램의 정확도를 검증하였다. 추가적으로 다양한 체형의 수화자를 인식시켜 프로그램을 실행 시켜봄으로서 체형에 따른 오차 값의 보완을 완료하여 수화번역에 대한 신뢰도를 높였다.

• 한국안전학회지
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• 제31권5호
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• pp.124-132
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• 2016

Welfare centers for disabled person which are typical facilities in Korea are classified into two catagories One is general welfare center for all type of disabled persons and the other is special welfare centers for special disabilities such as visually handicapped persons, hearing-impaired persons and the physically disabled. In this study the movements of disabled persons in daily lifes were measured and many evacuation drills in welfare centers were conducted for the achievement of basic data such as velocities and evacuation patterns of disabled persons The evacuation patterns are characterized by different kinds of disabilities.

• International journal of advanced smart convergence
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• 제9권1호
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• pp.54-62
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• 2020

According to the Ministry of Health and Welfare, "Status of Registered Persons with Disabilities", the number of people with disabilities is 2,494,460 as of 2015. The lowest rates of children with disabilities were intellectual disabilities (23%) and mental disorders (33.3%). The highest rates of screening were blindness (97%), heart failure (94.4%), and hearing impairment (92.7%). 65.2% of visually impaired people who have already had a disability at the time of marriage, and the remaining 34.8% can be thought to be the cause of high incidence of disability after marriage. 'SID (Seed in the Dark)' project was designed to recapture the visually impaired parent's desire for attachment and the space difficulties of the blind who want to be a normal parent to their children through a visual impairment of a father with 7-year-old daughter. Using Gear VR(Virtual Reality), the general public was able to feel the surroundings as if they had no vision and focused on the hearing. Especially, We expressed the sound wave visually and added the hilarious game element which grasps the terrain of the maze by sound wave like a 'blind person who perceives the surroundings by sound' and catches up with daughter. People with disabilities who are far from mental illness often have a form of family with children. The fact that the rate of childbirth is high means that there is relatively little problem in daily life. It is wondered that the rate of blindness among the visually impaired, which accounts for 10% of the total disabled, is the highest at 97%. This is because, in the case of the visually impaired, the obstacle is often caused by aging, accidents, or diseases due to inherited causes rather than the visual disorder. In particular, However, the fact that there is an obstacle in vision that accounts for 83% of the body's sensory organs causes other difficulties in the nursing process of children who are non-disabled. Parents do not know the face of child when their visual impairment is severe. Parents are extremely anxious about worry that they will be lost or abducted if their children are not by their side. And that the child recognizes the disability of his or her parents other than the other parents easily and takes it as a deficiency. Since visually impaired parents are mentally mature parents with non-disabled people, they may want their children not to feel deprived of their disability. The number of people with visual impairments has been increasing since 2001, and people with impairments often become disabled. In addition, there is much research on the problem of nondisabled parents who have children with disabilities, while there is relatively little interest and research on the problem of nondisabled child rearing of parents with disabilities.