The more narrow bandwidth selected, then the higher the frequency resolution, but this time to be testing to cover the entire frequency Fan stressed the need to filter the number of very substantial.
所选带宽越窄，则频率分辨力越高，但这时为覆盖所要检测的整个频率范调，所需要的滤波器数量就很大。
Each filter has flexible adjustability of its time window and frequency bandwidth. Therefore, high mode resolution and short observation time window can be self-adaptively achieved.
每个滤波单元时频域带宽柔性可调，能根据测量要求自适应取得较高的模式分辨率和较短的观测时窗长度。
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