"基于Labview的FIR数字滤波器设计研究及比较分析"

响应 digital filter (FIR). FIR digital filters have wide applications in the fields of speech, image, digital communication systems, and computer signal processing. This paper focuses on the design of FIR digital filters in the Labview environment. The paper mainly describes the principle, method, design process, and several commonly used design methods of FIR digital filters, such as the window function method, frequency sampling method, and Chebyshev approximation method. FIR digital filters designed using the window function method, frequency sampling method, and Chebyshev approximation method are compared, and their respective advantages and disadvantages are analyzed. Finally, the FIR digital filter designed using the window function method is simulated, and correct simulation results are obtained. Through the analysis of the experiments, this paper demonstrates the effective implementation of the design of FIR digital filters using several methods, and the designed FIR digital filters can effectively filter noisy signals. Keywords: FIR digital filter; Labview; window function method; frequency sampling method; equiripple Chebyshev approximation method.