convert xdr data to su format

[iuliia....@gmail.com]

Good afternoon everyone!

I have a little endian SU file with some seismograms. In order to add noise to the traces in this file I put the file through suoldtonew first (otherwise the program gives a message „number of samples in header differs from number for first trace“) and then apply suaddnoise. Due to this procedure I get the desired result, and the traces are corrupted with a desired noise level. But the problem is that I need the file in the original SU-format. I would be very grateful if you could tell me how to convert the final XDR-file back to SU-format (or ASCII). Or maybe there is another way to overcome the problem?

Best regards,

Julia