By using MATLAB signal and using window method, frequency sampling and Chebyshev approximation the design of low pass digital filter in the toolbox have been processed.
采用窗函数法、频率抽样法和切比雪夫最佳一致逼近法，通过调用Matlab信号处理工具箱中的函数设计低通数字滤波器。
This paper describes the approximation of active filters. An optimum seeking method is used to calculate the filter functions which have the form of Chebyshev approximation functions.
本文讨论有源滤波器滤波函数的逼近问题，提出了一种寻优方法，计算切比雪夫型滤波函数。
The design specification of antialiasing filter is presented by proof and the design and calculation of Chebyshev antialiasing filter is performed.
经论证提出了抗混滤波器的设计指标，进行了切比雪夫抗混滤波器的设计计算。
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