Based On Dsp Fir Digital Filter Design

21 century is the era of digitalization. With the rapid development of information processing technology, digital signal processing technology has developed as a kind of main technology gradually. It has been widely applied in the high-tech fields of electronic information, communication, software radio, automatic control, instrument technology and information electrical household appliances. Relative to analogue filter, digital filter can process low frequency signal without excursion. Frequency response property can be made very close to ideal property; its precision can reach very high, easy to be integrated and so on. These advantages determine the application of digital filter more and more widely. Meanwhile, the appearance of digital signal processor (DSP) and the rapid development of FPGA also stimulate the development of digital filter, and provide more choices for the hardware realization of digital filter.This project mainly applies the MATLAB software to design FIR digital filter; imitates the designed filter; applies DSP integrated developing surroundings—CCS to debug assembler; uses TMS320C5416 to realize FIR digital filter. The specific works include: analyzing and discussing basic theories of FIR digital filter; using the MATLAB software to learn basic knowledge of digital filter; calculating the coefficient of digital filter; studying the feasibility of the way of calculation; designing and imitating the earlier stage of FIR digital filter; introducing in a systematic way the hardware structure and characteristics of TI Company's TMS320C54x series of digital signal processor, and the integrated developing surroundings CCS of DSP; applying DSP integrated developing surroundings—CCS to debug assembler and using TMS320C5416 to realize FIR digital filter.