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Figure 3


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Error due to the regression of modal coefficients Cn and sn (a), and its consequence on the discrepancy between modal decomposition and definition (9) on zin (b). (a) Mean relative error ε between fitted modal coefficient and its actual value X = {sn, Cn}. Regression is based on Nv = 25 values of vRMS. (b) L2-norm of the error over zin for every frequencies, between definition given by equation (9) and modal decomposition approximation defined by equation (2). This error is plotted with respect to the degree of the fitting polynomial of Cn and sn.

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