Multiply operation was used for same-frequency filtering.
运用乘法运算进行同频滤波。
The paper uses the S transform for time-frequency filtering.
本文把S变换用于时频滤波。
In this paper, we introduce a new optical processing system utilizing reflecting spatial frequency filtering.
本文作者经过一系列的实验，研究出一种新的反射式滤波的光学处理系统。
We give the basic theory of frequency filtering. In the frequency domain, the work focuses on the adaptive Gaussian frequency filter.
给出了频域滤波的基本原理，重点研究了自适应高斯频域滤波器这一频域滤波算法。
Finally, frequency filtering technique is adopted and combined with the regression equation to reveal the effect of the designated frequency range on in-car noise preference.
最后采用频域滤波技术，识别出指定频率段对车内噪声偏好性的影响。
Finally, frequency filtering technique is adopted and combined with the regression equation to reveal the effect of the designated frequency range on in-car noise preference.
最后采用频域滤波技术，识别出指定频率段对车内噪声偏好性的影响。
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