[SAC-HELP] How to remove the instrument response?

[Sheila Peacock]

Dear Mohammed,

Guralp data sheets list the poles and zeros in units of Hz, not radians,
and usually for velocity or acceleration as appropriate for the instrument
(see the details on the actual data sheet).
For use in SAC you have to convert them to displacement in radians i.e. x2pi, then
add one zero at (0,0) if they are in velocity or two if they are in acceleration.

Regards,
Sheila