Find original sound from modify sound

Hello !
Sorry for my english… Im French !

I have a sound which has been modify (for a game) . And i have to find the original sound!
How can i do ?
Thanks for all

Unless you know how it has been modified, or it has some resemblance to the original sound, there may be no way to find the original sound.

oh snif
here is the sound :

I would guess that there may have been some speech in there. I doubt that it is possible to recover the original audio from the given information.

and its impossible to decode, or to modify something?
thanks for all Steve !