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. 2021 Aug 6;23(8):1016. doi: 10.3390/e23081016

Figure A10.

Figure A10

Bispectrum magnitude estimation with and without surrogate method for a severe OSA subject. (a) 2D bispectrum estimation; (b) 2D BWS estimation; (c) 3D bispectrum estimation; (d) 3D BWS estimation.