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With the rapid development of science and technology, digital signal processing technology is widely applied in various fields of , While digital filtering, digital signal processing technology plays an extremely important position. Traditional analog filtering ODU has been difficult to meet the needs of industrial production, so the study of digital filters have a very important The practical significance. As opposed to analog filters, digital filters do not drift, be able to handle low-frequency letter Number, can be a very good frequency response characteristics, and can reach a very high accuracy, easy to Integration, these advantages determine the application of digital filters will be more extensive. This article first introduces A finite impulse response digital filter (ie FIR digital filter) of concepts and mathematical models. Analysis Finite impulse response digital filtering of a variety of network topology and its characteristics. Comprehensive treatment of the limited impact To respond to the basic theory of digital filters. Discusses the finite impulse response digital filter design methods. In the above theoretical analysis, based on this paper, complete the following tasks: For the lack of commonly used design methods, this paper adopts the advanced optimization design method to improve the design Accuracy. Design of FIR digital filters, in the Simulink environment, the establishment of finite impulse response digital filter -Wave device simulation model of the system. Were used to optimize the design method and frequency sampling design of the interference filter Signal filtering. Oscilloscope with multiple filtering process tracking. The completion of FIR digital filter in the software platform implementation. The joint use of MATLAB and CCS The development of CCS generated using MATLAB filter works on the platform debugging success, has been filtering knot Fruit. Finally, filtering the results of a comprehensive analysis and comparison. Compared with the conventional implementations, this paper Used in this way can shorten the development cycle and simplify development process. Key words finite impact; digital filter; model simulation; code generatio
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