can someone please explain me the x-axis in the attached figure?
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About the normalized frequency. I mean what does it represent. Please guide me in detail
Answers (1)
Star Strider
on 9 Dec 2015
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In discrete (uniformly-sampled) signals, the highest usable frequency is the Nyquist frequency, defined as half the sampling frequency. All frequencies in the Fourier transform of a sampled signal are therefore ‘normalised’ from zero to the Nyquist frequency, expressed in ‘pi radians/sample’. You can get the x-axis of your figure in Hz if you multiply it by the Nyquist frequency.
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on 9 Dec 2015
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on 20 Aug 2021
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