SOUNDSCAPE DESIGN OF TACTICAL ELECTRIC VEHICLE CABIN THROUGH PERCEPTION TESTS IN A VIRTUAL ENVIRONMENT

• Main Author: Nathaniel Gunawan, Timothy
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/73116
• Institution: Institut Teknologi Bandung

This research explores the potential of active sound design in the Indonesian electric vehicle market, where there are a projected 2 million electric vehicle users by 2030. While active sound design is a crucial aspect in addressing the lack of engine sound in electric vehicles, it is still developing and mainly focused on certain regions according to existing studies. The active sound design approach includes active noise control to reduce unwanted noise inside the cabin, and engine sound enhancement by inserting additional synthetic engine sound through the speakers. The aim of this research is to help electric vehicle manufacturers optimize their active sound design solutions for future electric vehicle production in Indonesia. To optimize the production of active sound design, it is essential to have a deep understanding of the user's preferences for the interior sound quality of an electric vehicle. Therefore, psychoacoustic research plays a crucial role in achieving this goal, as it involves studying how people perceive and respond to sounds, especially in the context of active sound design for electric vehicles. The study evaluates the original interior soundscape of a tactical electric vehicle made in Indonesia, Pindad Morino EV (EV ORI), and three modified stimulus that includes one active noise control stimulus (EV IMP), and two engine sound enhancement stimuli (ICE and FUTURE). The stimuli were evaluated through a perception test conducted in a virtual environment as a representation of the actual soundscape of Pindad Morino EV cabin. The results of the test show that the active noise control technology with high-pass and low-pass filters (EV IMP) is the most preferred stimulus proven by the highest comfort value perceived by the participants. Another finding also indicates significant differences in several bipolar semantic evaluations between car users and car designers. Therefore, car designers should consider the importance of validating active sound design to the car users to produce a more user-centered result with higher sound quality rating, and better overall user experience.