Vehicle Sound Quality Evaluation and Control System

Abstract

AbstractThis chapter introduces the self-developed evaluation system and ASQC system of the vehicle interior noise. The evaluation system has the functions of subjective, objective and intelligent comprehensive evaluation. The subjective evaluation system includes global and instantaneous evaluation, which can automatically collect and save evaluation results, effectively simplify the evaluation process and improve the efficiency of subjective evaluation experiments. The objective evaluation system can evaluate the objective parameters of vehicle noise conveniently and quickly. The intelligent comprehensive evaluation system uses the objective evaluation results and the SVM-based SQE model to predict the subjective evaluation results. As an alternative to the subjective evaluation experiment, it can effectively reduce the manpower and costs in SQE. To better control the vehicle interior noise and improve customer’s experience, researchers develop some active control systems. According to the historical evolution of the system, this chapter introduces the prototype of active control of vehicle interior noise based on hardware-in-the-loop simulation for academic research, the prototype based on FPGA suitable for small batch production and the prototype based on DSP suitable for mass production.