【作者】 王天宝； 殷福亮；

【Author】 WANG Tian-bao,YIN Fu-liang (School of Information and Communication Engineering,Dalian University of Technology,Dalian,Liaoning,116023,China)

【机构】 大连理工大学信息与通信工程学院；

【摘要】 压限器是音响系统中动态控制部分的重要模块,它的主要作用是保护功率放大器和扬声器。本文设计了一种功能全面、算法高效的数字压限器。本文合理地简化了目标增益曲线,提出了高效的状态转换算法和快速的电平检测算法,分析了压限器容易出现的"喘息效应",并给出了分频压缩的解决办法。计算机仿真表明,本文设计的压限器有良好的幅度压限效果。更多还原

【Abstract】 Compressor-Limiter is an important part of the dynamic control module,its main function is to protect the power amplifier and speakers.This paper designs a full-featured and efficient digital Compressor-Limiter.We reasonably simplify the target gain curve,propose efficient state transition algorithm and fast level detection algorithm.This paper analyzed Compressor-Limiter’s common"sucking and breathing",and we designed a sub-frequency compression solution.Computer simulation shows that the compressor-limiter has a good effect of amplitude compession and limitation.更多还原