[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 )
taper
bp c ...
Make sure the signal you are interested in is not too close to the edges
Frederik
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
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