Hi all,I attempt to apply a SAC Wiener filter to remove a noise. A design filter window is taken just before the first arrival. Tests show that an amplitude of the resulting signal is changed, sometimes up to order of magnitude, that makes this version of filter unsuitable for further spectral estimations and response specter analysis. Could you tell me, please, how to normalise the signal after the SAC Wiener filter application to get correct amplitudes?I use the 101.1 Version of SAC, in Fedora-8.Thank you,Cheers,Nadia