车载收音机立体声噪声产生和消除的研究

Produce and Elimination of Noise in Car Radio Stereo

为了改善车载收音机的接收效果,本文通过对车载调频收音机在弱场强信号和多路径干扰下产生噪声的原理分析,得出了应用动态软静音,动态高频衰减,动态立体声混合等措施对消除噪声有效作用的结论,并提出采用这些措施的实际应用经验。展望将来调频信号解调前信号软件优化算法的消噪技术的应用。

In order to improve the receiving effect of the car radio, through study of car FM radio noise strong signals in a weak magnetic field and muhipath interference, the paper concludes that the application of dynamic soft mute, dynamic high frequency response attenu- ation, and dynamic Stereo Mono blending are effective to eliminate noise. Practical experience for these applications is also presented and future FM signal demodulation signal software optimization algorithm is applied to de-noising technology.