Soundscape design methodology using a perception model for activity transition in future mobility

In the context of Future Mobility, a methodology for soundscape design using a perception model has been developed to facilitate the implementation of performance spaces among various activity transitions. This approach involved evaluating the soundscape and room acoustics of orchestra performances and solo singing that penetrate the vehicle interior, aimed at comparing with the auditory and visual environments of a concert hall. The performance hall being compared was a large, rectangular concert hall, and the evaluation point was located in the center of the audience. To investigate audio-visual preferences, variables related to sound pressure level and spatial acoustic quality were initially defined. Following this, in-car human perception in Concert Hall mode was assessed, grounded on indoor acoustic parameters relevant to music listening, encompassing acoustic satisfaction and audio-visual components. To enhance the poor audio-visual environmental conditions inside the vehicle from a UX perspective, implementations of transparent displays and stereoscopic sound were implemented. The methodology was validated based on the psychophysiological responses of participants to the audio-visual soundscape factors, aiming for performance enhancement.