Iranian Sustainable Building Scientific Association International Journal of Urban Management and Energy Sustainability 2538-1628 7 2 2026 04 01 Investigating the Effect of the Architectural Components of Metropolitan Soundscape on the Mental Well-being of Citizens 1 22 737639 10.22034/ijumes.2026.2070336.1329 EN Mahdi Malekjani Department of Architecture, Sav.c., Islamic Azad University, Saveh, Iran Mohsen Kameli Department of Architecture, Sav.c., Islamic Azad University, Saveh, Iran 0000-0001-9592-6882 Bahram Saleh Sedghpoor Department of Educational, Faculty of Humanities, Shahid Rajaee Teacher Training University, Tehran, Iran 0000-0002-3251-2567 Fereshteh Navidi Majd Department of Architecture, Isl.C. ,Islamic Azad University, Islamshahr, Iran 0000-0001-7320-6251 Journal Article 2025 08 30 As one of the dimensions of environmental perception, the soundscape of metropolises plays an important role in shaping the mental well-being of citizens. Accordingly, the present research was conducted with the aim of synthesizing and integrating the existing body of knowledge on the relationship between the architectural components of soundscape and citizens' mental well-being in the areas adjacent to the take-off and landing runways of Mehrabad Airport in the metropolis of Tehran city. The research was carried out with a qualitative approach, using the meta-synthesis method based on the seven-step model of Sandelowski and Barroso; reputable domestic and international sources were searched systematically, the quality of the studies was appraised with the CASP checklist and the reporting followed the ENTREQ principles, and after systematic screening forty selected studies were analyzed through open, axial and selective coding and organized into conceptual categories. The findings showed that the architectural components of soundscape can be classified into four main groups and sixteen indicators, which affect the various dimensions of mental well-being among these, while architectural design strategies and soundscape management play a key role in improving the quality of sound perception and the psychological and functional outcomes. Finally, a multilayered conceptual model was presented that explains the interaction between the architectural components, the quality of sound perception and the dimensions of mental well-being and the results of this research can provide a basis for urban design and architectural decision-making aimed at enhancing citizens' mental well-being. https://www.ijumes.com/article_737639_57926ecf62f853a0b95d60fbd52c4dff.pdf