How do I use a filter...?

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Junu Lee
Junu Lee on 18 Jan 2021
Commented: Mathieu NOE on 19 Jan 2021
I obtain angular velocity data from AHRS sensor.
Then I obtain angular acceleration by applying discrete differentiation each term.
But I has many noises, so I'd like to apply a low pass filter.
But I don't know how to make a filter.
How can I make spectrum and find cutoff frequency?
And then how can I make filter..?
Thank you..
  1 Comment
Mathieu NOE
Mathieu NOE on 19 Jan 2021
hello
you can start with simple moving window averaging (equivalent to low pass FIR ) using movmean

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