Ratio between the no-wiggle and the linear matter power spectrum. Top: Comparison between the raw featureless power spectrum P_EH and the no-wiggle power spectrum P_nw computed using Eq. (C.1). In both cases, the power spectra are computed at z = 0 using the fiducial cosmology from Table 1. Bottom: Comparison between the three different methods we tested to obtain the no-wiggle power spectrum P_nw. The thick orange line corresponds to the method we selected, i.e. the convolution with a Gaussian smoothing function, while the other two lines represent a Discrete Sine Transform (red) and a basis spline (blue). In both panels, the grey shaded bands represent the 1% (dark grey) and 2% (light grey) thresholds.