[SAC-HELP] Filtering

Frederik Tilmann tilmann at esc.cam.ac.uk
Wed Jun 21 06:10:01 PDT 2006

This is an edge effect. You must taper amplitudes to zero at the edges 
to avoid.  Use the following sequence

rmean   ( or rtrend )
bp c ...

Make sure the signal you are interested in is not too close to the edges


Matthew R. Agius wrote:
> Hi once again,
> I have a problem with filtering.
> When i filter a SAC file a get a sor tof a spike in the begining of the 
> file.
> How can i eliminate the spike?
> Matthew
> _______________________________________________
> sac-help mailing list
> sac-help at iris.washington.edu
> http://www.iris.washington.edu/mailman/listinfo/sac-help

More information about the sac-help mailing list