摘要
在线数字滤波器就是采集模拟信号进行数字化后,送入DSP进行滤波处理,再实时输出滤波后的模拟信号的一个系统。从滤波器的技术指标出发,运用MATLAB软件设计FIR滤波器的参数,使用汇编语言编写DSP处理器的FIR数字滤波器程序和AD/DA转换器接口程序,实现了一个在线FIR数字滤波器。通过了软件仿真和硬件在线调试,给出了实验波形。
An on-line digital filter is a system that collecting the real-time analog signal and digitizing by A/D converter, then filtered in the DSP device by calculation, and finally the filtered signal being output immediately by D/A converter. Starting from the filter specifications, FIR filter parameters are got by MATLAB software, assembly language is also used for the program of FIR digital filter and the interface program of A/D and D/A converter to implement the digital filter. The experimental waveforms are given after software simulation and hardware debugging.
出处
《国外电子测量技术》
2010年第5期52-55,共4页
Foreign Electronic Measurement Technology
基金
苏州市职业大学校级科研课题基金(SZD09L27)资助项目
