Thread: Waveform stacking

Hi,
I am using "sumstack" to stack SAC files. I checked the header of the
stacked file and the file type is time series file. I want to make
spectrogram of ground motion (m/s) using stacked file. Is it possible to
stack instrument corrected SAC files such that the stacked file represent
ground velocity in meter/second. I would be grateful for any suggestion in
this regard.

Thanks
Abhash Kumar