摘要
滤波是数字信号处理的基础,数据采集过程中经常会引入高频干扰,文章利用巴特沃斯(Butterworth)滤波器设计方法,设计了一种IIR低通数字滤波器,并基于Delphi环境应用软件设计的方法实现了IIR滤波器。通过滤波,信号里面的干扰信号基本上被滤除,有用信号未受到影响,滤波效果尚可,具有一定的实用价值。
The filter is the basis of digital signal processing. [n view of the data acquisition process will often introduce the high frequency interference, the paper uses Butterworth filter design method, designs a IIR low-pass digital filter, and realizes llR filter based on Delphi environment design method.Through the filter, the inside of the signal interference signal is filtered out basically, useful signal is not affected, effect is good, there is a certain practical value.
出处
《无线互联科技》
2015年第19期136-138,共3页
Wireless Internet Technology
