SUBSIM Radio Room Forums - the attack periscope's sound when it's turning?

SUBSIM Radio Room Forums (https://www.subsim.com/radioroom/index.php)

- SHIII Mods Workshop (https://www.subsim.com/radioroom/forumdisplay.php?f=195)

- - the attack periscope's sound when it's turning? (https://www.subsim.com/radioroom/showthread.php?t=139766)

Quote:

Originally Posted by Mikhayl

I think I saw this in an old post, the sound in NYGM and in SH4 (fleet boats only) is just the sound of the TDC bearing dial which is linked to the scope movement. You could replace it with a motor sound, but if you move manually the dial it will have a motor noise. And maybe the same for every TDC dials if the sound cannot be separated.
But then there may be another way.

Interesting... :hmm:

Thanks for sharing! :up:

Quote:

how fast did the electric motor rotate the scope? Did it have more than one speed? Is the speed governed by the arrow keys accurate, or was it slower

I can't give exact figures, but there were two speeds, normal and slow.

There were also two turning methods, electric and by hand. Well the electric one is actually hydraulic, i.e. an electric pump builds pressure on an oil circuit and then the pedals controlled by the observer's feet determine the admission of oil to the circuit. Thus it is reasonable to believe that the harder the pedal pressing, the faster the scope turning speed.

Quote:

More to the point, the observation scope was operated by hand from a standing position and had no motor. If you give the sound to one, will it also appear in the other? I won't argue against creating the sound, because no one has to use it. I'm just asking what the end result will be, as I'd love to have it both ways, selfish blighter that I am.

Again very good point Steve :up:

The observation scope was entirely manual in the rotation, controlled by the handles manned by the observer. There should be no noise there, except when raising or lowering.

Just to clarify/confuse matters, was just reading the USN report on the evaluation of U570 after capture by the RN and came across the following:-

The periscope was operated by the observers . It operated smoothly and noiselessly by hydraulic power and manual control. Fine control of training speed is possible under both power or manual operation.

It seems that if there was any sound it would not very pronounced.

Quote:

Originally Posted by Philipp_Thomsen

Wrong. The captain is rumbling a song "hmmm mmmm mmmm mmmm" which is very very hard to eliminate using a software. But there's other places in the movie where I can extract the motor sound, that is not an issue.

Sorry. I haven't been able to watch it for a couple of years. Good that you can get it somewhere else.

Quote:

Probably it's possible to separate the sound from being used in both periscopes, to only being used in the attack periscope. But if we don't, that's no much of an issue. After all, people hardly use the observation periscope. (at least I don't).

That would be nice. I never click the 'F' keys; I always click on the hatch and climb to the conning tower to use the attack periscope, so I tend to use the observation scope for anything but a dedicated attack, just like in real life.

Quote:

Originally Posted by Cheapskate

If it's a deadly silence, then you can hardly hear and motor engine.

But after reading all this and watching some movies, I've come to this conclusion:

Bot periscopes could be operated by hand, without any help for an electric motor, and maybe both periscopes or just the attack periscope could be operated with the help of an electric motor. The purpose of the electric motor could be to help giving a 360º lookout, sitting on the little chair and letting it do the rest. The scopes didn't seem to be very heavy to be turned by hand.

Conclusion... I don't think we need a sound for it.

"..It operated smoothly and noiselessly by hydraulic power and manual control.."

So , the noise in the movie is not so much accurate historically??

Quote:

Originally Posted by Philipp_Thomsen

Quote:

Originally Posted by Cheapskate

That's pretty much the same conclusion as I was coming to. Makes one wonder if the usual periscope noises aren't a bit too "over the top" Going to keep them though - but may quieten 'em down a bit.

For anyone needing a horizontal peri movement sound there is always NYGM's clock tick. However ambient noise levels in a U-Boat could be pretty high....remember those BBC sound recordings?? ( Wouldn't mind betting they were from U 570), so I think a gauge movement would have been inaudible. Besides I seem to remember some NYGM users thought the sound was irritating and wanted to remove it.

Oh well, that's that then! You can have the rest of the weekend off :rotfl:

Edit

@ Sag75

It seems likely that the DAS BOOT sounds were not realstic but like many things to do with U Boats, it's difficult to be sure. Soundwise there doesn't seem to be much available - the BBC recordings seem to be the only readily obtainable sounds that aren't film related. Unfortunately they don't include any peri noises.