基于ARM Cortex-M3的IIR滤波器的实现

基于ARM Cortex-M3芯片设计了IIR滤波器,滤除心电信号混有的50 Hz工频干扰.经MATLAB实验表明所设计的IIR滤波器对50 Hz工频干扰具有良好的滤波效果.将其移植到以ARM Cortex-M3芯片为CPU的系统中,取得了同样良好的滤波效果,验证了ARM Cortex-M3核虽然不是专用的DSP芯片,...

IIR filter implementation base on ARM Cortex-M3

An IIR filter is designed based on the ARM Cortex-M3 chip to filter the 50Hz frequency interference mixed in ECG signal.The experiment based on MATLAB shows that the 50Hz frequency interference is effectively filtered from ECG signal by the IIR filter.When it is transplanted to the system in which the ARM Cortex-M3 is applied as CPU chip,the IIR filter still works well,that verified better performance can be obtained in digital signal processing as its high performance and high clock frequency,although ARM Cortex-M3 core is not a dedicated DSP chip and a good prospect in digital signal processing can be expected.This paper is committed to promoting the application and popularization of ARM Cortex-M3 series in the field of embedded systems.