sushape optional parameters

[franziska...@gmail.com]

Hi all,

I am a new user and I am trying to use the "sushape" command for compressing a minimum phase wavelet to a zero-lag spike. Now I have the problem that my spike does not start at zero..it has a delay (depending where the minimum phase wavelet starts) but the spike is always in the middle of the trace! Has anyone an idea how I can fix that? Does the optional parameter "nshape" play a role? I am not really understanding how I should choose the length of the shaping filter yet! Maybe someone can help me with he whole Wiener shaping filter problem!

Thanks in advance!