|CRP Toolbox Reference|
PurposeComputes the recurrence time entropy.
y=rpde(x) calculates the normalised entropy y of the recurrence time distribution of time series x, also known as recurrence period density entropy (RPDE).
In contrast to the calculation of RPDE here, in crqa a Theiler window is applied to the RP by default, resulting in different RPDE values. For comparison, you should ensure that the Theiler window in crqa is set to 0.
b=sin(0:.1:80) + 0.1 * randn(1,801);
See Alsocrqa, tt
Little, M., McSharry, P., Roberts, S., Costello, D., Moroz, I.: Exploiting Nonlinear Recurrence and Fractal Scaling Properties for Voice Disorder Detection, Biomed. Eng. Online, 6, 2007.