Fig. 2. (A) The even dipole wavelet function, _e, as a function of position along the lateral line, s, for two values of the source distance d (10 mm, solid line; 20 mm, broken line) as indicated. The shift factor b=0 mm. (B) The odd dipole wavelet function, _o, for two values of the source distance d (10 mm, solid line; 20 mm, broken line) and with shift factor b=0 mm. D denotes the distance between the two extremes. (C) The linear combination of the even and odd wavelets for =8°, for two values of the source distance d (10 mm, solid line; 20 mm, broken line) and b=0 mm. S denotes the distance along the lateral line between the zero crossings (A,C).