1·It is shown experimentally that a method available for compensating for the diffraction by centre frequency in narrow band filters can effectively improve their stopband characteristics.
本文介绍适用于窄带滤波器的中心频率衍射补偿方法。实验表明，此方法可以有效地改善滤波器的阻带特性。
2·Introduces a SIR electric filter with improved stopband performance.
介绍了一种改进阻带性能的SIR滤波器。
3·It can be found from the computer emulation that the IIR filter has the better passband and stopband characteristics than FIR filter with the same number of tap-weight.
从计算机仿真结果可以看出，当滤波器抽头数相同时，IIR滤波器具有更好的通带和阻带特性。
4·Utilizing the three-band lifting scheme, the paper designs a novel family of biorthogonal interpolating complex wavelets with stopband zero suppression.
本文利用三带提升方法构造了一类具有阻带零点抑制的三带双正交复内插子波 。