Sorry, there was a nasty typo in my command !
using

suvibro f1=0.5 f2=0.5 | suop op=diff | suxgraph style=normal width=1500 title=normal

the result looks correct with some perturbations due to the beginning and end tapers

D.

On 04/11/2020 17:45, Dominique ROUSSET wrote:
suvibro f1=0.5 f2=0.5 | suop of=diff | suxgraph style=normal width=1500 title=normal

-- 
|Dominique Rousset           LFCR UMR5150 / E2S UPPA / Dpt des géosciences| 
|Univ. Pau et des Pays de l'Adour BP 1155       F-64013 Pau Cedex - France|
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