APDFT方法兼有窗函数法和频率采样法的优点，是一种设计FIR滤波器的新方法。
The APDFT method is a new scheme for FIR filter design, possessing concurrently the merits of the windowing and the frequency sampling method.
本文在频率采样法的基础上提出了具有可控阻带凹陷特性的线性相位FIR滤波器的设计。
Based on the frequency sampling technique, we have proposed a new method for designing linear-phase FIR filters with steerable stopband dips.
介绍了FIR数字滤波器的设计，采用频率采样法，运用MATLAB完成设计中的计算和图形绘制，使其变得简单、快捷。
This paper introduces a method for FIR digital filter design. To compute and plot by using the frequency-sampling method and MATLAB makes the design of an FIR digital filter convenient.
首先，把特定的载荷频率范围离散成有限点，并通过对数采样法进行预采样。
Firstly the frequency domain was discretized into limited points. And a logarithmic sampling method was used to select samples.
当采样频率比较高时，数字化自然采样法的频谱分布与自然采样法的频谱分布类似。
When sampling frequency is quite high, frequency spectrum distributing of digital natural sampling and natural sampling is similarity.
当采样频率比较高时，数字化自然采样法的频谱分布与自然采样法的频谱分布类似。
When sampling frequency is quite high, frequency spectrum distributing of digital natural sampling and natural sampling is similarity.
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