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During my materials science PhD, I've encounteres this transform as a way to process and smooth out electrochemical impedance spectrograms, with the Z-HIT algor
by ajot 3y ago
During my materials science PhD, I've encounteres this transform as a way to process and smooth out electrochemical impedance spectrograms, with the Z-HIT algorithm[0]. As far as I know, only one or two EIS appliance manufacturers include it in their software, unfortunately not the one I was using.
[0] https://en.wikipedia.org/wiki/Z-HIT https://en.wikipedia.org/wiki/Z-HIT
- kurthr 3y agoI always thought of the Hilbert Transform and Z-HIT as the complex Laplace like substitute for Fourier and DFT analysis. Having never used them or SSB in particular, is that an fair analysis or am I missing something important?
- ipunchghosts 3y agoThe signal model for Laplace is x(t)*exp(alpha t) where as the signal model for HT is x(t) only. Another way to say it is that Laplace models the signal envelope as an exponential explicitly while decomposing the remaining signal into frequency components. In Fourier space, the exponential is "rolled into" the frequency components.