344 Copyright © 2018, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. Chapter 15 DOI: 10.4018/978-1-5225-3637-6.ch015 ABSTRACT The study investigates the infuence of diferent façade materials on listeners’ space wideness percep- tion on the basis of auditory stimuli, aiming at improving the awareness of how diferent façade designs can infuence the outdoor environment under multiple aspects. The investigation has been conducted through a listening test with a 4-level factorial design in which participants had to rank diferent sound stimuli with respect to the perceived wideness of the space in which they were produced. The stimuli were obtained through auralisation of an impulsive sound in virtual scenarios in which diferent scat- tering and absorption coefcients of the building façades and diferent source and receiver positions were tested. Results showed that the absorption coefcient of the façades and sound source position signifcantly afect the perceived wideness of spaces while scattering coefcient and receiver position do not. Moreover, no correlation was found between the above-mentioned factors, and music experience of participants proved not to be an infuential factor as well. Investigations on the Infuence of Auditory Perception on Urban Space Design Through Virtual Acoustics Cristina Calleri Politecnico di Torino, Italy Louena Shtrepi Politecnico di Torino, Italy Alessandro Armando Politecnico di Torino, Italy Arianna Astolfi Politecnico di Torino, Italy