# Tag Info

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Probably not. Applying Z-score to an FFT is problematic. The FFT is a complex signal and you need to define exactly how to normalize. For example you could normalize the complex frequency domain signal directly. However that doesn't make much sense. Example: the FFT of a unit impulse $\delta(n)$ has a mean of 1 and a standard deviation of 0. If you time ...

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Sometimes Stackexchange coughs up these ancient unanswered questions. Since I've started, I'll answer in spite of the age: iirdesign expects you to give it frequencies in the range 0..1, normalized to the Nyquist frequency (the latest version looks like it'll let you tell it the sampling rate for your own convenience). You can expect that any filter design ...

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