【摘要】 通过对数字滤波器理论的系统分析,讨论了FIR数字滤波器的设计方法、步骤及实现形式,运用MATLAB仿真工具进行频谱分析和滤波运算模拟仿真解决设计问题,设计出符合性能指标的滤波器,并利用MATLAB的功能函数提取了叠加白噪声的两个正弦信号,仿真实验验证了结果的正确性。更多还原

【Abstract】 Through the analysis of the system of digital filter theory,discusses the design method of FIR digital filter, steps and realization form, use MATLAB simulation tools for spectrum analysis and filter arithmetic simulation to solve design problems, design conforms to the performance index of filter,and the function of the MATLAB function is utilized to extract the white noise of two sine signals, the simulation results verify the validity of the results.更多还原