Investigation of indoor soundscape indicators according to the types of occupants' activity in autonomous vehicles

Electric and autonomous vehicles have brought about a paradigm shift in interior space design and are now replacing their functions as spaces for living, work and leisure activities. Therefore, in order to design the optimal sound environment for the interior space of the vehicle, it is necessary to investigate the interior soundscape of the vehicle based on the type of occupant's activity and the purpose and function of the space. However, although the soundscape concept has been applied to the design of urban and natural spaces and large indoor spaces such as open plan offices, there is no study on the interior space of vehicles. In this study, soundscape indicators were set according to the activity patterns of autonomous vehicle occupants. Through the result, it is possible to derive vehicle interior soundscape design factors based on the evaluation of each type of sound environment presented.