| 요약2 |
It is often the case that various kinds of language listening tests are held in high school classrooms. The condition of listening environments may influence the test. Currently, high school classrooms have a variety of listening environments. Size of classrooms, location and performance of loudspeakers, doors and windows location which may affect the background noise level, reverberation are the part of the factors which affect the listening environment. Among those conditions, the change of listening environment according to the positions, power and number of speakers are studied in this study. The results show that ceiling four speakers uniformly installed are more narrow deviations in STI value than that of one speakers. And the directivity of speakers are more effective to improve the listening environment than change the speakers power. |