【摘要】 论述了数字滤波器结构的表示方法,介绍了IIR滤波器的设计理论和方法。鉴于此,介绍了基于Visual Basic(VB)虚拟仪器中数字滤波器的设计,给出了数字巴特沃斯滤波器的设计方法,并通过设计实例说明了这种方法的优点。更多还原

【Abstract】 This paper discusses the demonstration of the structure of digital filter.Then introduces the design theory and method of IIR digital filter.So that,the paper introduces the design of digital filter based on the design of VB in virtual instrument,and it gives the design method of digital Butterworth filter.The advantages of this approach are exemplified with the cases from the current design.更多还原