What do these do?

[CB..]

these setting if they do work likely function directly on the destroyers sensors rather than the subs--(they are on one or two stock destroyers after all )

so it's allways worth banging them in all the DD's in the hope that it might enhance gameplay--

i got the sense that they did work--especailly the noise--hard to test of course as there's no debug system to show the figures--

try
[SOUND]
EchoFront = 100.0
EchoSide = 100.0
EchoRear = 0.0
Noise = 100.0

for example to help generate the rear ward blind spot--

can't remember exactly what set i used of hand--

but i worked on the idea that if it did work then wonderfull stuff --if it didn't then it's just text in a file --end of story--