I'm designing a low pass filter to identify the DC content of a signal. The most important aspects of my application are the accuracy and the speed of the identification.
I would like to know if the phase lag brought by the filter plays an important role in my problem, because I have developped a filter that has a great performance in time (it identifies the DC component very fast and accurately), but its frequency response is poor in terms of phase. Do I really need to worry about it in this situation?
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