Does anyone have a list of the announcement sound effects? The ones I have so far are: (in no particular order)
-Deeoo
-Dadeda
-Woop
-Bizwarn
-Buzwarn
-Bloop
And also
-Vox_login (I don't remember it being used in half-life though)
Browsing through sentences.txt, I notice vox Hazard Course entries, as follows:
// training room
TR_A three, two, one, deeoo(p110)
TR_B deeoo(p110) (p102 t20) target system deactivated
I imagine it's from the beta/alpha version of the Hazard Course. I found a picture of it
Notice its all in one room, prehaps thats why in the liblist.gam the hazard course map is referred to as "training room"
EDIT:
Ancient on-a-rail, perhaps?