放送聴取中における騒音評価 : 意味のある音声のうるささ

概要

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There are various effects of environmental noise on our daily life, but there are few investigations of the effects of noise on performing some tasks. This study aimed at obtaining the evaluation of the noise with context in situations similar to daily life. In order to realize this situation, the subjects were instructed to suppose that they were listening to the broadcast in the living room. And they were told to evaluate the noises with context which is presented with the broadcast program. The results showed that the annoyance of the noise with context is almost evaluated by L_<eq>. Investigated in detail, however, the interruptive sounds with context, are more annoying than the steady and meaningless noise with the same energy. This fact seems to be related to the effect that the attention is scattered when signal sound and interruptive sound can be heard at the same time.
社団法人日本音響学会の論文