고등학교 교실의 청취환경에 영향을 미치는 조건에 관한 연구

It is often the case that various kinds of language listening tests are held in high school classrooms. The quality of listening environment in the classroom may be influenced by variable noise source. Speaker"s quality and finishing materials and noise sources of air conditioner and fan are the one of the major factor of listening environment in the classroom. The noise sources occurred in the classroom may influence the listening environment. So in this study, acoustical measurements were carried out in the four different classroom. According to the noise sources, the D50 value had a little change in the low frequency ranges. And these results appear to have little influence on the STI value. But quality of speaker and absorbing material in the classroom are more effective to improve the listening environment.