How do I pass the signal through a low-pass FIR filter?

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Zaref Li
Zaref Li 2021-4-28
评论： Star Strider 2021-4-29
I have a string called the signal. I want to pass it through a low pass FIR filter very close to this signed ideal. How can I do it?
signal=1x732
signal=[-0.0029, 0.0117, 0.0068, ...,0.4467, 0.5054]

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回答（1 个）

Star Strider
Star Strider 2021-4-28
if ‘h’ are the numerator vector of the filter (and the filter is designed correctly) —
signal_filtered = filtfilt(h, 1, signal);
That should work.
  2 个评论
Star Strider
Star Strider 2021-4-29
In this example, ‘h’ is a vector of coefficients returned by the funciton that designs the FIR filter (or that you calculate). How you design the filter is your choice, depeding on your reqquirements.

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