3、键词 ：FIR数字滤波器；MATLAB；可编程逻辑器件；模块化算法 IIIAbstractthe FIR digital filter is used form any practical applications for its good linear phase character, and it provide an important function in digital signal processing design. In engineering practice, there is always a real-time and flexible
4、 requirement for signal processing. However, software and hardware techniques available for implementation are difficult to meet the demand for the two aspects in the same time.(1) With the basic theory of FIR digital filters for basis, In MATLAB through corrugated approximation metho
5、d such as calculated filter coefficient, and analyzes the amplitude frequency, phase frequency characteristics determine whether meet the requirements. (2) In the FPGA design, the arrangement, modular design thought, the filter will be divided into multiple function module, the use of
6、 language and Verilog principle chart input two design technology of each function module design, with MATLAB, QuartusII software simulation. Eventually completed the FIR digital filters system design. (3) Download the 64 order of the design of the low FIR filter into FPGA (EP2C5T114
7、C8N) chip, with an oscilloscope to observe the design result accords with a requirement, Show the design of FIR digital filters function correctly. And the results also show that the FPGA to achieve FIR filter, has both the real-time property, also has the certain flexibility. Keyword
