What is the unit of normalized cutoff frequency of a butterworth filter !

I know it should be in the range of ( 0 and 1)

But I need to know the unit please !!

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# What is the unit of normalized cutoff frequency of a butterworth filter ! I know it should be in the range of ( 0 and 1) But I need to know the unit please !!

electrical engineering

What is the unit of normalized cutoff frequency of a butterworth filter !

I know it should be in the range of ( 0 and 1)

But I need to know the unit please !!

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