Optimized Design of IIR Digital Filter and Its Realization with DSP

Firstly,this paper describes why direct-2-type filter can overcome the overflow of 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.