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I need to analyze real signals $y_i$ in the frequency domain. $y_i$ are defined like:

$y_1 = ln(ln(x))$

$y_2 = ln(ln(ln(x)))$

$y_3 =~ ...$

$...$

Are there Fourier transformation pairs for this kind of problem? $x$ is real and non-negative.

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  • $\begingroup$ Why not apply an equal number of $e$ exponentiations to get rid of the $\ln$ (?) $\endgroup$ – A_A Apr 10 at 9:15

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