Assessment of Acoustic Satisfaction at Metro Stations from an Objective and Subjective Point of View (Case Study: Metro of Tehran and Tabriz)

Document Type : Original Article

Authors

1 PhD Student, Department of Architecture, Najafabad Branch, Islamic Azad University, Najafabad, Iran.

2 Visiting Professor, Department of Architecture, Najafabad Branch, Islamic Azad University, Najafabad, Iran

3 Associate professor, Faculty of Architecture and Urbanism, Tabriz Islamic Art University, Tabriz, Iran.

4 Assistant Professor, Department of Urban Planning, Najafabad Branch, Islamic Azad University, Najafabad, Iran.

5 Assistant Professor, Department of Architecture, Najafabad Branch, Islamic Azad University, Najafabad, Iran.

10.48301/kssa.2023.361415.2281

Abstract

The provision of sound comfort and speech intelligibility in metro stations also contribute to the mental and physical discussions of individuals in addition to safety and security. In acoustics, an objective evaluation alone is not sufficient to determine acoustic satisfaction and there is a need for subjective evaluation. Therefore, the purpose of this research was evaluation of acoustical satisfaction in metro stations in terms of quantity and quality with descriptive-experimental methods. The required data was collected through field studies that included measurement of physical parameters (SPL and RT) as well as questionnaires to better understand the audience and measure their satisfaction with the five effective components in acoustic quality (auditory, speech, human, functional and architecture) and analyzed in two EXCEL and SPSS software. A comparison with international standards was made in the scope of physical measurements and recognition of the underlying variables to determine the satisfaction, the relationship between the factors influencing the acoustic satisfaction with the demographic variables which research in humanities is looking for. The analysis of the collected data indicated that the SPL and RT did not follow the relevant standards. The main factors of dissatisfaction from people’s points of views included mechanical, dynamic and speech reflection in metro stations, which produce significant noise, and have a great impact on safety and security and the performance of public address systems. Furthermore, satisfaction of users had a significant correlation with variables such as gender, age, number of trips during the day, and auditory ability of each individual.

Keywords

Main Subjects

References

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Karafan Quarterly Scientific Journal
Volume 19, Issue 4 - Serial Number 60
Art and Architecture | Agriculture
March 2023
Pages 323-347

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History

  • Receive Date: 05 October 2022
  • Revise Date: 09 December 2022
  • Accept Date: 15 January 2023

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