【摘要】 根据IIR(Infinite Impulse Response)数字滤波器的设计原理,提出了IIR数字滤波器的快速设计方法,并在MATLAB6.1环境下做出了实现快速设计IIR数字滤波器的设计系统.在该系统中,只需要将数字滤波器的技术性能指标根据指定的或是需要的设计方法(如双线性变换法或脉冲响应不变法等),转换为模拟滤波器的技术性能指标,根据指定的模拟滤波器设计出相应的数字滤波器.该系统中指定的模拟滤波器为巴特沃斯(Butterworth)滤波器和切比雪夫(Chebyshev)滤波器,该系统为快速。高效地设计IIR数字滤波器提供了一个可靠而有效的工作平台。更多还原

【Abstract】 The fast design method of IIR(Infinite Impulse Response) filter is provided based on the principle of filter design, and the design system of the IIR filer is worked out under the MATLAB6. 1 environment. It is necessary that the parameter of digital filter is transformed to the parameter of analog filter based on the indicated method (for example, the method of double linear transform or the method of non-changing impulse response etc. ), and the digital filter is designed based on the indicated analog filter. The Butterworth filter and the Chebyshev filter(both are analog filter) are indicated. A reliable and efficient work station is provided in order to design filter quickly and efficiently.更多还原