Abstract
The effects of some physical and cognitive factors on annoyance of noise were studied. Twenty male subjects were divided into two groups presented with (SP group) or without (NP group) the slide of fall scene. They were exposed to fall sound and white noise at four different sound level; 45, 65, 75, 85dB (A). The annoyance of these sounds were evaluated by (1) the method of adjustment and (2) rating scale.
Results obtained were as follows:
(1) Annoyance evaluated by the method of adjustment was primarily dependent on sound level of the sound.
(2) Annoyance evaluated by the rating scale was dependent on both sound level and cognitive factor, i. e., the results were dependent on whether subjects recognized what the sound is or not. Annoyance in SP group was relatively lower than that in NP group, especially when the sound level was 45dB (A).
