通过软件的方法设计了相关滤波器，实现了对振动信号的数字滤波，有效地提高了精度和工作效率。
Using software technology to design correlation filter, the digital filter of vibration signal was realized and the precision and work efficiency was improved.
给出了一种二维fir数字滤波器的优化设计方法。
An optimized method for the design of two-dimensional FIR digital filters is proposed.
文章以巴特沃思滤波器为例介绍低通滤波器的基本设计方法。
This paper introduces the basic methods for designing the low-pass filter, taking Butterworth filter as an example.
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