单片机在削波失真校正中的应用

The Application of MCU in Sharpen Wave Distorted Revision

大功率功放电路的输出很容易产生削波失真。传统的解决办法是通过压限器对输入信号进行压缩。但压限器依赖起控电平进行压缩,所以会有误压缩和漏压缩的缺点。针对这些问题,提出新的压缩方法——动态压缩法。新方法利用单片机判断输出有无削波失真,如果失真超过允许时间,则对输入信号进行压缩。新方法比传统方法更加安全、可靠而且适应范围更广。

The output of high-power amplifier circuit is prone to induce sharpen wave distortion. The traditional solution is to compress the input signal through the limited voltage device. But the limited voltage device depends on the turn on voltage to compress the signal, so that wrong compression and lost compression may result. This paper puts forward a new compression method--dynamical compression. The new method uses the MCU to judge if the output is sharpen wave distorted. If the signal distortion exceeds the allowed time, the input signal is compressed. The new method is safer, more reliable and have wider applications than the traditional method.