Adaptive Algorithm of Active Sound Design for the Engine Noise

With the development of technology, the paradigm of the vehicle powertrain is changing. The engine is becoming smaller and smaller due to environmental restrictions. However, a small size of the engine has limitations on the variety of engine sound. Thus making artificial engine sound with an extra audio system will make the car more sporty and active. Nowadays, many of the vehicle companies are adopting active sound design(ASD) into their vehicle. In this paper, a new adaptive algorithm for the ASD is proposed. This algorithm will enable the engine sound to reach the specific noise level that the sound designer is planned to. Through the numerical simulation and the experiment results will be shown through this paper.