Development of Offline Simulation Software for Active Sound Design in Electric Vehicles

With the increasing adoption of electric vehicles (EVs), Active Sound Design (ASD) has emerged as a crucial method to enhance both the sound quality and driving experience, addressing the lack of distinctive engine sounds present in internal combustion vehicles. This paper presents an ASD offline simulation software developed on the MATLAB platform to address these challenges. The software integrates a vehicle dynamics model with three key sound synthesis algorithms: order synthesis, pitch shifting, and granular synthesis, allowing for comprehensive control strategy development, real-time sound playback, and rapid adjustment. The software consists of several functional modules, including configuration, order generator, pitch shifting, and granular synthesis interfaces, which support user-friendly operation and flexible sound parameter adjustments. Users can simulate different driving conditions and evaluate the acoustic performance of the ASD system in real time. The system also allows configuration of vehicle dynamics, setting gain values, and visual manipulation of sound parameters to achieve a customized ASD experience. Real-world vehicle testing verified the effectiveness and responsiveness of the synthesized ASD sounds, demonstrating that the simulation software significantly enhances the efficiency of ASD development. By reducing the need for extensive in-vehicle testing and lowering calibration costs, this tool enables EV manufacturers to create distinct auditory experiences that reinforce brand identity and enrich the driver's emotional connection to the vehicle.