In this study, utilization of public announcement systems for disaster information in Fukushima prefecture is investigated. And relationship between contents broadcasted by these systems and demographic statistic of municipalities are analyzed. As a result, there is no direct relation between existence of the public announcement systems and demographic statistics of municipalities. The order of acceptability of contents broadcasted by these systems is (1) disaster information, (2) notification from local government, (3) information for farmers, (4) notification from schools and (5) results of regional elections. Disaster information is broadcasted at all local governments which have public announcement systems. Notification from local government is not accepted broadcasting at urbanized municipalities. Information for farmers is only accepted broadcasting at agricultural municipalities. Notification from schools is accepted at smaller agricultural municipalities. Thus, The acceptability of each content is closely connected with progress of urbanization of municipalities.
This paper describes an escape guidance sound that indicates, accurately and quickly, the escape route from an indoor space when disasters such as fire or earthquake occur suddenly. First, based on the conditions that should be satisfied for classification as ‘escape guidance sound’, the authors set up the base model of the sound and decide the parameters that affect its acoustical characteristics. Next, the authors discuss the psychological impression of oppressive feeling in relation to the escape guidance sound, and audibility of the sound in coexistence with background noise/attenuated sound. Finally, an effective escape guidance sound of optimum practicality to victims is proposed, based on the above considerations.
Evaluation of human impression for acoustic environmental design at public space is very difficult and researched to generalize suitable method day by day. This paper describes seasonal field experimental results in summer and winter to investigate by free description of adjective method for evaluation of the design space. Evaluation results indicate that acoustic environmental design influences seasonal impression which is received from the experimental space in summer and winter. Furthermore, significant effects of acoustic environmental design to relax climatic stresses are observed by comparing the results at different seasons.