Improvement of Sound Quality in Car Based on the Third-Party Sound Effect

Sound quality of cars is an important part of the automobile information and entertainment system for user’s experience. The enclosed space of cars combined with the multi-channel stereo audio source can create the sound effect like a moving concert hall. With the development experience of automobile audio system, this paper analyzed the influence factors of the sound quality in low-cost passenger vehicles, and it introduced the classification and technical characteristics of some sound effects, and how to integrate the third-party sound effects to improve the sound quality in car. With the mass production verification, it obtained development method, test, and evaluation criteria, which could provide reference for the sound quality improvement of the audio entertainment system.