Product of convolving a given frequency channel of a lightcone with our wavelet, $I(\mathit{x})\ast {\stackrel{\sim }{W}}_i(\mathit{x})$, which is the inverse Fourier transform of our Gaussian window function. Each wavelet is given by the inverse Fourier of a single concentric circle in Fig. 1. The left-most image is of the original frequency channel with no window function applied. The rest, from left to right, are from window functions centred on: 0.113 h⁻¹ Mpc, 0.196 h⁻¹ Mpc, and 0.342 h⁻¹ Mpc.