How to determine range.

[PeriscopeDepth]

Keep in mind MarkShot: speed has no effect on ownship sound emissions in Sub Command unless you are cavitating, so kicking it up a few knots is something you shouldn't worry about.

PD

[MarkShot]

So, is this wrong? Forgot where I got this or who did this. Thanks.

[PeriscopeDepth]

Markshot,

AFAIK, Sound vs Speed was first done with DW 1.3 Beta.

PD

[MarkShot]

PD,

So, you when I am playing SC and fire a torpedo at a sub and I watch DEMON its speed ratchet up ... at the same time, in BB I can definitely hear an increase in SFX volume and the BB track goes thick and bright, you are saying that I have not detected a measured simulated affect, but simply that the target has begun to cavitate?

Hmm, I think I will set up a little trial with a very deep contact and bump the speed by about 5kts at waypoints of 6 minute intervals and see what BB shows.

Next to the fact that I can raise my scope all I want in SC/DW, I would find the fact that I can run at any speed with no difference to be really upsetting. This would be enough to drive me back to playing AOD!!!

I'll keep you posted and hope you are wrong.

[PeriscopeDepth]

What I am referring to is documented in the Sonalysts DW readme as the "sound vs. speed fix" under the 1.02 section. I don't think this has been fixed in SC, doesn't bother me though. I play DW.

Edit: Forgot link.
http://scs.sonalystsgames.com/phpBB/...6ad979573e40fd

PD

[MarkShot]

Here is the proof for that chart.

This is stock SC 1.08. I used the SW (easier to demo) and the contact is a close 688i in the first case making 5kts and the second case 30kts. Testing done at around 1400' for both subs.

Notice the thickness of the BB contact and the SNR value; a difference of 250% and you can hear on the speakers too.

I submit to you that the assumption that Sonalysts only corrected SC bugs in DW may be an incorrect assumption, and, in fact, Sonalysts in producing DW may have well introduced new bugs into the game engine as this clearly illustrates. Whoever made that chart, clearly had run some detailed tests.

Me, I play SC, SCX, and DW-LWAMI. Why discard a perfectly good game like SC just because DW is newer? (I still play AOD by the way too.)

[MarkShot]

So, now if one applies the inverse square law (not sure if that applies to sound propagation), then one would be able to make a statement of how much more detectable the 688i is at 30kts versus 5kts.

I can tell you this from playing SC and also SCX (assuming not every AI sub is cavitating). You can see an AI sub running from a torpedo make a bright track on BB. Then, at some point they slow down from 35kts to 5kts and they literally dissappear off BB, but you are usually okay if you had a NB tracker on the 50 or 60Hz tonal.