SUBSIM Radio Room Forums - View Single Post - Screw Revolutions to Determine Ship's Speed.

Nisgeis · 01-07-11, 05:54 PM

As far as I recall, all efforts to provide useful information from the sound you hear have failed. The problem is that the sound effect doesn't correspond directly to the actual RPM of the ship screws above and below a certain narrow range.

The sonar is a very simple approximation, which is why there are no frequency filters to cut through wave noise nor a beat counter - as those things aren't modelled.

As for the pit log being fed into the TDC, it is. It's fed into the PK part of the TDC. Of course it's Own Speed and not Target Speed, but that's fair enough really.

01-07-11, 05:54 PM	#2
Nisgeis Ocean Warrior Join Date: Jan 2008 Posts: 2,909 Downloads: 77 Uploads: 11	As far as I recall, all efforts to provide useful information from the sound you hear have failed. The problem is that the sound effect doesn't correspond directly to the actual RPM of the ship screws above and below a certain narrow range. The sonar is a very simple approximation, which is why there are no frequency filters to cut through wave noise nor a beat counter - as those things aren't modelled. As for the pit log being fed into the TDC, it is. It's fed into the PK part of the TDC. Of course it's Own Speed and not Target Speed, but that's fair enough really. __________________ -------------------------------- This space left intentionally blank.