频域抽样 meaning in Chinese

frequency domain sampling

For fir , after researching window function method and frequcy sampling method , it is suggested that the filter designed from blackman window function is satisfactory , afterward the filter is programmed with reasonable operational structure
再分别对fir滤波器的窗函数法和频域抽样法进行仿真分析，从中得出用512点的布拉克曼窗函数设计的fir滤波器能满足滤波要求，然后选用合理的运算结构对此滤波器编程实现。