摘要
首先叙述了直接Ⅱ型IIR(无限冲击响应)数字滤波器能够克服使用定点DSP实现IIR数字滤波器时引起的输入数据的溢出问题;然后利用MATLAB软件生成滤波器的输入数据和系数,进行相应的数据压缩处理,并生成仿真波形;最后给出了用DSP语言实现直接Ⅱ型结构IIR数字滤波器的完整程序、仿真结果,同时对仿真结果进行了分析、比较。
Firstly, this paper describes why direct-2-type filter can overcome the overtlow ot input data when we design IIR filter with fixed-point DSP. Secondly, the paper shows how to generate the input data and coefficients by MATLAB, then to compress the data and to generate the simulation wave form. Finally, the complete program, simulation wave form of direct-2-type IIR filter are presented using DSP. At the same time, the simulation wave form based on DSP is analyzed in detail and compared with that from MATLAB.
出处
《电子工程师》
2006年第3期37-39,共3页
Electronic Engineer
