Soundscape developed in Europe and Canada. In 1996, it was incorporated into urban planning in Japan. In recent years, Taiwan has begun attaching value to the conceptual application of soundscape, which is reflected on the actuation of the 2015 Taipei Soundscape project. The development of the rapid transit in Taiwan is entering into its second decade, where metro systems are operational in both Taipei and Kaohsiung. The present study aimed to investigate the soundscape conditions of the Taiwan's Metro Systems, where urban transportation compositions can be created by the sounds of travelling and transiting passengers. The present study adopted a questionnaire and an observational research method to collect the sounds along the main transport lines and at the central hubs of the Taipei and Kaohsiung Metro Systems. Finally, the present study adopted the ecological triangle concept proposed by Tilly (1974) to analyze the differences between the soundscapes of the two metro systems. In terms of acoustic features, environmental sounds were more easily recorded in the Kaohsiung Metro during the day, and human-caused sounds were more easily recorded during the evening peak period. By contrast, Taipei Metro were more easily recorded during the morning off-peak period, and human-caused sounds were more easily recorded during the remainder of the time. In terms of passengers' sound impressions, the departure sound employed by both Metro Systems stimulated a sense of anxiety. The findings of the present study can serve as reference for the future planning of urban metro systems to form favorable urban imagery.
Chengping Mao, National Yunlin University of Science and Technology, Taiwan
Li-Shu Lu, National Yunlin University of Science and Technology, Taiwan
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