• The Journal of the Acoustical Society of Korea
• /
• v.26 no.7
• /
• pp.306-316
• /
• 2007

Based on a concept of soundscape, this study aims to investigate Koreans' preference for auditory elements, features, and impressions depending upon the season, and examine how these auditory factors of soundstape and seasons interact with each other and attempt to discover their influence on people's auditory preferences. According to an environmental psychological approach called the caption evaluation method, 45 college students examined the soundscape of Namwon City while racing the streets in four seasons. In order to analyze the interactions between seasons and such auditory factors as elements, features, and impressions, it was conducted the GLM univariate analysis and the NPAR tests for independent samples. The results of the analyses show that there are interactive effects between seasons and auditory factors like elements, features, and impressions and that the auditory factors have an effect on auditory preference. Moreover, as for seasonal preference for auditory elements, it was found that people prefer natural sound in spring, summer, and fall while they prefer social sound in winter. Concerning seasonal preference for auditory features, people place a focus on the behaviors in spring, summer, and winter while they stress the surroundings in autumn, as for seasonal preference for auditory impressions, they make much of sound characteristics in spring and winter but they value the atmosphere of streets in summer and fall. The results of this study can he utilized as useful data in determining which auditory factors among elements, features, and impressions to take into consideration in a soundscape design.

• The Journal of the Acoustical Society of Korea
• /
• v.15 no.5
• /
• pp.90-98
• /
• 1996

An auditory model is proposed for robust speech recognition in noisy environments. The model consists of cochlear bandpass filters and nonlinear stages, and represents frequency and intensity information efficiently even in noisy environments. Frequency information of the signal is obtained by zero-crossing intervals, and intensity information is also incorporated by peak detectors and saturating nonlinearities. Also, the robustness of the zero-crossings in estimating frequency is verified by the developed analytic relationship of the variance of the level-crossing interval perturbations as a function of the crossing level values. The proposed auditory model is computationally efficient and free from many unknown parameters compared with other auditory models. Speaker-independent speech recognition experiments demonstrate the robustness of the proposed method.

• MALSORI
• /
• no.15_18
• /
• pp.57-70
• /
• 1989

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2010.05a
• /
• pp.437-440
• /
• 2010

In modern society, people will obtain the necessary goods and find meaning of himself and his community through jobs. The meaning of job for people with disabilities is identical with people's with non-disabilities and people with disabilities will live as a member of society through jobs. Because people with hearing impairment have a problem about job such as the short longevity and high turnover, vocational aptitude test which evaluates psychological characteristics, aptitudes and interests is necessary for them. In this paper, we design and evaluate the picture vocational interest inventory supporting the Internet as a vocational aptitude test for people with hearing impairment. We use the picture vocational interest inventory of Korean Employment Development Institute as a implementation target. The previous tests for people with hearing impairment have a problem which an examinee, an examiner and a sign language interpreter are involved in the test at the same space and time. Therefore, our picture vocational interest inventory has no limitation of time and space because it processes on the Internet.

• Journal of Korea Multimedia Society
• /
• v.10 no.2
• /
• pp.200-208
• /
• 2007

The noise induced hearing loss, which is one type of the hearing losses, is well known occupational diseases. The prevention of the noise induced hearing loss is very important, because it is unrecoverable. There are some kinds of devices for hearing protection, and those are effective in preventing the noise induced hearing loss. However, people often resist the use of hearing protection devices because they have some difficulties during conversation in wearing the devices. To solve the problem, a small acoustic filter can be used for a hearing protection device. In this paper, we designed several kinds of small acoustic filters and analyzed the characteristics of designed small acoustic filters using Finite Element Analysis (FEA). From FEA results, we proved the characteristics of designed small acoustic filters which vary according to length and diameter. And we found out that the general tendencies of modeled filters using FEA are same as acoustic experiment results of designed filters.

• The Journal of the Acoustical Society of Korea
• /
• v.19 no.7
• /
• pp.28-33
• /
• 2000

For efficient quantization of speech representation, it is common to incorporate Perceptual characteristics of human hearing. However, the focus has been confined only to the magnitude information of speech, and little attention has been paid to phase information. This paper presents a novel approach, termed perceptually irrelevant phase elimination (PIPE), to find out irrelevant phase information of acoustic signals in terms of perception. The proposed method, which is based on the observation that the relative phase relationship within a critical band is perceptually important, is derived not only for stationary Fourier signal but also for harmonic signal. The proposed method is incorporated into the analysis/synthesis system based on harmonic representation of speech, and subjective test results demonstrate the effectiveness of proposed method.

• The Journal of Korean Academy of Sensory Integration
• /
• v.12 no.2
• /
• pp.1-12
• /
• 2014

Objective : The purpose of this study is to investigate about what autistic-spectrum disorder child's relationship between the sensory process types, the auditory behavioral characteristic and sociality Methods : The study performed from May to June, 2014. Targeting 15 children diagnosed as the autistic spectrum disorder and other 11 children suspected as having the autistic spectrum disorder in their ages of full 2-14 years old. This study used the Auditory Behavioral Checklist, Ewha-Check List for Autistic Children, Social Maturity Scale, School Function Assessment and sensory profile. For the data analysis, the statistical analysis was conducted with the SPSS 18.0. Results : First, in the relationship between the sensory process type and the auditory behavior, the preschool children and the school children showed some positive correlations with the hearing in the background noise and the communication, respectively. Second, the hearing in the background noise and the communication showed some meaningful relationship with sociality. Conclusion : The occupational therapists need to investigate effects of the sensory integrative intervention with sensory diet to improve sociality.

• The Journal of the Acoustical Society of Korea
• /
• v.41 no.1
• /
• pp.52-57
• /
• 2022

Speech consists of the sum of complex sine-waves. This study investigated the perception of electrical hearing by applying the sinusoidal model to cochlear implant simulation. Fourteen adults with normal hearing participated in this study. The sentence recognition tests were implemented using the sentence lists processed by the sinusoidal model which extracts 2, 4, 6, 8 sine-wave components and sentence lists processed by the same sinusoidal model along with cochlear implant simulation (8 channel vocoders). The results showed lower speech recognition for the sentence lists processed by the sinusoidal model and cochlear implant simulation compared to those by the sinusoidal model alone. Notably, the lower the number of sine-wave components (2), the larger the difference was. This study provides the perceptual pattern of sine-wave speech for electrical hearing by cochlear implant listeners, and basic data for development of speech processing algorithms in cochlear implants.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
• /
• 2001.05a
• /
• pp.54-59
• /
• 2001

본 연구는 청각적 감성을 만족시키는 의류소재의 개발을 위해, 직물 마찰음에 대한 인간의 감서을 생리반응측정과 심리적·주관적 평가를 통해 파악하고, 직물 마찰음이 갖는 음향특성과의 관련성을 고찰하였다. 이를 위해 직물 마찰음의 음향특성을 분석하고, 직물 마찰음에 대한 감각·감성 표현어(부드러움, 시끄러움, 유쾌함, 날카로움, 맑음, 거침, 높음)를 이용하여 주관적 평가를 실시하였으며, 생리적 반응으로서의 뇌파 및 혈류량, 심박변화율, 피부전도수준 등을 측정하였다. 주관적 감각·감성은 대부분 직물 소리의 크기와 관련이 깊은 것으로 나타나, loudness(Z)와 총음압 LPT가 증가할수록 시끄럽고 거칠며 딱딱하고 불쾌하며 탁하다고 지각하였다. 생리적 반응과 관련하여서는, 부드럽고 조용하며 맑다고 지각할수록 slow alpha파가 증가하였고, 유쾌하고 매끄럽다고 평가할수록 혈류량은 증가하였다. 또한, 높다고 지각하는 소리에 대한 LF/HF는 증가하였다. 마찰음의 음향특성이 생리적 반응에 미치는 영향으로서, LPT가 혈류량의 감소에, Loudness(Z)가 피부전도수준의 증가에 각각 영향을 미치며, sharpness(Z)가 높고 ΔL이 작을수록 LF/HF는 증가하는 것으로 나타났다.

• Korean Journal of Social Welfare
• /
• v.67 no.3
• /
• pp.125-150
• /
• 2015

The purpose of this study is to explore all the deaf marriage experiences. To achieve this purpose, the qualitative case research approach was used to analyze the couple. This researcher following same issues from 5 couples case study analysis. This researcher set 5 titles and analyze from the 5 main issues about the deaf couple's experience as time goes by. The titles are 'finally the marriage spouses both deaf', 'to overcome communications difficulties', 'worried about raising children and get some help from other people and try something', 'try to get over the difficulties and hardships', 'recovering family relationship and challenge.' Through this study, understanding the deaf couples desire in having a family and live a normal life after becoming parents is "in a family deaf culture" wherein they aspire to become more mature and experienced deaf persons. But the meaning of maintaining constancy was not just keeping their situation by taking familiar things hence there were no challenges. Keeping the constancy, maintaining a family since marriage, delivering and raising their children, make them realize some laws of life. They correspond well and break the narrow limited cultural way of thinking and recognized a broader sense of understanding while keeping constancy. Their life that is keeping their culture and experiencing matured life will be a good theoretical basis for understanding the deaf culture.