스피커 유니트의 수량 및 배치방식에 따른 교실 청취환경 편차

Current classroom contains only on loudspeaker unit on ceiling for emergency call and public address. The diversity of listening environments in classrooms may affect on the score of the listening tests in different positions. This study aims at the improvement of uniformity in listening condition at classrooms for the reliability of lustening test concentrated on the quality and arrangement of such loudspeaker units