マスキングされた室内騒音と仕事の能率の関係( 音響利用技術-音響情報・音響エネルギー-)

In the room where noise exists, we try to employ the masking effect in the sense of hearing to change the sound environment and reduce the stress due to indoor noise in work. Considering 1/f characteristics, we prepare four kinds of maskers and efficiency tests are carried out based on Kraepelin test. The exsitence of the masker increases the work amounts and may reduce the mistakes in work. The results show that the use of the appropriate masker yields the improvement of the work efficiency.