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. 2017 May 2;55(11):2037–2052. doi: 10.1007/s11517-017-1647-5

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© The Author(s) 2017

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 1 — Spectrograms, time plots, and zoom views on the first and last time intervals of the synthetic signals used in this study. a Chirp signal with constant amplitude. b AR(1) process with variable parameter ρ. c MIX process evolving from randomness to periodic oscillations. d Logistic map signal. e Lorenz system with two different non-linear dynamics. Red corresponds to high power and blue corresponds to low power (color figure online)

Fig. 1 — Spectrograms, time plots, and zoom views on the first and last time intervals of the synthetic signals used in this study. a Chirp signal with constant amplitude. b AR(1) process with variable parameter ρ. c MIX process evolving from randomness to periodic oscillations. d Logistic map signal. e Lorenz system with two different non-linear dynamics. Red corresponds to high power and blue corresponds to low power (color figure online)