차량 실내 소음 제어를 위한 능동 음향 설계 기술 개발

Recently, an active control approach is widely used in vehicle industry. Particularly, the active sound design and control techniques for control the vehicle interior sound due to powertrain is mostly used. There are several challenges are exist and many know-how are demanded for the application to vehicle successfully. And the performance of control and stability are demanded basically. This paper investigates active sound design system of a road vehicle with audio system. The adaptive filter which can reduce or enhance the virtual engine sound generated by secondary path was developed for the real time control. The developed control algorithm was considered in terms of robust stability and performance. Next, engine sounds were developed by using developed active sound design system. Finally, the developed control system and sounds were verified in real driving test.