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. Author manuscript; available in PMC: 2017 Jul 15.
Published in final edited form as: Physica A. 2016 Jul 15;454:143–150. doi: 10.1016/j.physa.2016.02.012

Fig.6.

Fig.6

Comparison of IMAAC results for signals with spurious and true AACs. (A, B) IMFs and(C, D) AACC of (A) a sawtooth wave (10 Hz) without AAC and (B) a synthetic signal with AAC between two sinusoids (10 Hz and 40 Hz). In both signals, the amplitudes of oscillations are modulated by the same arbitrary nonstationary amplitude.