This is a re-released video. I was asked, by Universal Studios to strip out the U-571 movie clips and movie commentary. I also added additional sounds of depth charges and machine gun fire recorded from a submarines sonar gear.
I can get the clips but the commentary should be fair use. If they didn't want bad commentary about it make a more accurate movie.. Regardless, these are great. Keep up the good work!
@@HonestPercentage38well, and it's not like the video was even about that film. It's not a contributing reason that anyone viewed this media. It's not dragging on coat-tails, which is the spirit of the law! Stuff like that really makes me mad
It doesn't matter how bad the movie was - this channel used copywritten material without permission (and, fortunately for those of us who are interested in an informative scholarly study of WW2 submarine combat, the sound-clips from the movie were able to be removed without affecting the quality of this video whatsoever.)
Seeing those few short seconds of U-571 had put me in the mood to watch the movie again. But if the studio is going to treat you like that and deny fair use clips, well... **** 'em.
I listened to these recordings at Fleet Sonar School, Key West in 1972/73. These are real recordings made with real hydrophones and explosives. They can be found at Historic Naval Ships Association. You may have to search around on their site for the recordings.
When they made The Right Stuff they hired a consultant who knew all the astronauts. That consultant argued with the director that the real astronauts would never act like that. That they were real people with real personalities and deserved to be remembered for who they were. The director told him the audience would never believe astronauts acting like the actual astronauts. That's a really fucked up anecdote when you think about it. There's so many things people only know and experience through fiction. people for possessing blue candy. It got so bad the makers of the instant drug test had to admit the most common blue food dye gives a false positive for methamphetamine on their tests.
The book Iron Coffins gives an incredible German perspective describing what it was like to be subjected to these attacks. Being a WWII submariner must've been harrowing.
U-boats had some of the highest, if not the highest fatality rate of any occupation in ww2. I'd imagine being a crew man on a U-Boat probably felt like a death sentence from sometime in 1943 onward. I wouldn't doubt that many of them felt it was a matter of when and not if they were going to die.
Note that the sounds heard in this video would not remotely resemble what you would hear in real life in the water or in the sub. 1. The real sound heard in water would be the initial huge very short bang followed by a series of bangs progressively quieter and more rumbly as the sound reflects off the sea surface and the sea floor, travelling back and forth, each bang much quieter than the previous. 2. There would also be bangs as the sound reflects back and forth between the sub and the sea surface. 3. When a depth charge explodes, it creates big cavity in the water containing hot gas. Over the next second or so the cavity will collapse creating a rain-like noise; 4. Any water blown off the sea surface would fall back creating a rain-like sound for a few seconds; 5. The sonobuoy transmitter and receiver were vacuum tube based, and as the recording said, overloaded. It would have been considerably overloaded. Vacuum tube circuitry was noted for it ability to produce long duration artifacts when overloaded. All these things mean that the sonobuoy operator doesn't hear the short loud bang, he hears the long drawn out miss-mash mangled hiss-like noise, nothing like the sound as heard by ears in the water or sub. It's partly like the long drawn out piano-note heard at the end of a Beatles song - it goes on way longer than you normally hear a piano do, get progressively more rumbly. They did it by turning the mixer channel volume flat out so that you hear the studio reverberation that isn't normally noticed.
I believe the WW2 sonobuoys may have had an AGC circuit which would limit the gain therefore the volume you hear. The noise you hear from the buoy stays constant then slowly fades. This circuit also avoids overloading the preamp and the other amps in the buoy. The hydrophone was a pizeoelectric and would generate a large output into a circuit that would "clip" it to avoid overdriving the input circuitry.
@@tomtrenter3208 In World War 2, electronics was vacuum tube based. Tubes draw a lot of electrical power and were expensive, so for battery powered disposable things like sonobuoys there was a powerful incentive to keep the circuitry as simple as possible. So I would not be surprised if they didn't have AGC - they probably just relied on overdrive/clipping. But the airborne receiver, not disposable and running off the aircraft 28 volt bus, would have certainly had AGC. AGC in vacuum tube circuitry requires variable slope tubes, which with battery tubes means low gain - a further incentive to not have AGC. But there is a circuit trick they could have used: back-back copper oxide diodes shunting the signal after the first tube - this can give a quasi-logarithmic response which doesn't mash the signal components together like hard clipping does.
I find stuff like this extremely interesting. I've had an idea to get a hydrophone and record ships passing by in a local channel to see what they sound like. I wish more stuff like that was accessible, but I've only been able to find a few such recordings out and about.
Craziest thing I have seen recently was the discovery of the deepest wreck ever, the WW2 ship who's name I forgot, something like 15k feet down. Anyhow the ship was in bad condition as one would expect except for the entire battery of completely attached and ready to deploy depth charges still right on the back with no harm.
Depth Charges and Sonar Pings - driving Mother Nature mad ever since, and no wonder so many men became Alcoholics after the War... Das Boot was as close to a 'Documentary' as you'll get without the smell, while U-571 provides only what's missing from Das Boot. Respect to those who served.
I would be interested in hearing more about the debate & controversy over “lethal range.” It’s also funny to me that the source before a graph purporting the exact lethal range, says the whole idea of lethal range is in question.
Yeah I've heard submariners say they were only lethal if they exploded below the boat. Explosions to the sides or above were relatively ineffective since they took the path of least resistance.
How deep was the water in which the recordings where made? Was there a thermocline? Both conditions would trap any noise causing reverberations. Regardless, the recordings are pretty cool.
I would think with the amount of energy release with a depth charge a thermocline would be transparent. I know oil exploration seismic ships use high pressure compressed air to read the subsurface formations and after they shoot the air they listen to the return for over 20 seconds. When I was in the Navy we had buoys that sent back temperatures as the probe was lowered from a spool of wire. I worked on the aircraft’s avionics.
@@Chris_at_Home I was a Sonar Man in the Navy. The buoy you mention is a bathythermograph. We launched them from the ship directly into the ocean. From the read out we would determine the active and passive ranges for the sonar gear. In the case of explosions of this nature a sharp thermocline will act like a mirror reflecting most of the sound energy back to the surface. As the sound hits the surface the difference in water and air density interface will cause the sound to reflect back towards the ocean floor. The waves would also cause the sound to scatter as well. That's why the explosion is heard for so long. The leading edges of the sound hit the transducer first and it takes some time for all of the scattered elements (trailing edge) of the sound to reach the buoy as well. This is true for light as well (lasers and such). The same thing happens in shallow water. The sound hits the bottom of the ocean, bounces back to the surface. As with the sound scattering has it hits waves, the same is true for the bottom of the ocean. In both cases the water eventually absorbs the sound and the noise can no longer be heard. However, there are documented cases where sound channels allowed sound to travel thousands of miles.
Question: would Germany have won the war if they had developed the proximity fuse in early 1941? Certainly, I think that if they had done so, they would have completely destroyed all heavy bombers that were targeted towards Germany, where there was plenty of flak guns. Proximity fuses may also have helped the Germans to shoot down the soviet Air Force as well.
There is no reasonable timeline that Germany wins WW2. Any timeline where Germany gets an advantage early on only prolongs the inevitable loss of Germany. After Operation Barbarossa, they had the majority of the world's industrial output coming down on them. There is no winning in that scenario, there is only prolonging the loss.
You use someone's content, you get the copyright strike by automatic bot. It should be common knowledge at this point. Solution - Do not use someone else content.
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This is a re-released video. I was asked, by Universal Studios to strip out the U-571 movie clips and movie commentary. I also added additional sounds of depth charges and machine gun fire recorded from a submarines sonar gear.
Thank you for making these videos. I’ve had a life long fascination with ww2 technology.
I can get the clips but the commentary should be fair use. If they didn't want bad commentary about it make a more accurate movie.. Regardless, these are great. Keep up the good work!
@@HonestPercentage38well, and it's not like the video was even about that film. It's not a contributing reason that anyone viewed this media. It's not dragging on coat-tails, which is the spirit of the law! Stuff like that really makes me mad
Don’t be sad. U-571 is an abysmal bad movie. Good riddance!
It doesn't matter how bad the movie was - this channel used copywritten material without permission (and, fortunately for those of us who are interested in an informative scholarly study of WW2 submarine combat, the sound-clips from the movie were able to be removed without affecting the quality of this video whatsoever.)
Seeing those few short seconds of U-571 had put me in the mood to watch the movie again. But if the studio is going to treat you like that and deny fair use clips, well... **** 'em.
I listened to these recordings at Fleet Sonar School, Key West in 1972/73. These are real recordings made with real hydrophones and explosives. They can be found at Historic Naval Ships Association. You may have to search around on their site for the recordings.
Another reason to avoid anything from Hollywood these days.
You mean ever. The sound of a Smith & Wesson .44 is a joke. The real sound is nothing like it.
When they made The Right Stuff they hired a consultant who knew all the astronauts. That consultant argued with the director that the real astronauts would never act like that. That they were real people with real personalities and deserved to be remembered for who they were.
The director told him the audience would never believe astronauts acting like the actual astronauts.
That's a really fucked up anecdote when you think about it. There's so many things people only know and experience through fiction.
people for possessing blue candy. It got so bad the makers of the instant drug test had to admit the most common blue food dye gives a false positive for methamphetamine on their tests.
Uh, really? Who watches Hollywood for facts. I'm looking for good entertainment.
i missed this series and will have to watch it now.
Outstanding material, as usual in this channel👍.
The book Iron Coffins gives an incredible German perspective describing what it was like to be subjected to these attacks. Being a WWII submariner must've been harrowing.
U-boats had some of the highest, if not the highest fatality rate of any occupation in ww2. I'd imagine being a crew man on a U-Boat probably felt like a death sentence from sometime in 1943 onward. I wouldn't doubt that many of them felt it was a matter of when and not if they were going to die.
Note that the sounds heard in this video would not remotely resemble what you would hear in real life in the water or in the sub.
1. The real sound heard in water would be the initial huge very short bang followed by a series of bangs progressively quieter and more rumbly as the sound reflects off the sea surface and the sea floor, travelling back and forth, each bang much quieter than the previous.
2. There would also be bangs as the sound reflects back and forth between the sub and the sea surface.
3. When a depth charge explodes, it creates big cavity in the water containing hot gas. Over the next second or so the cavity will collapse creating a rain-like noise;
4. Any water blown off the sea surface would fall back creating a rain-like sound for a few seconds;
5. The sonobuoy transmitter and receiver were vacuum tube based, and as the recording said, overloaded. It would have been considerably overloaded. Vacuum tube circuitry was noted for it ability to produce long duration artifacts when overloaded.
All these things mean that the sonobuoy operator doesn't hear the short loud bang, he hears the long drawn out miss-mash mangled hiss-like noise, nothing like the sound as heard by ears in the water or sub.
It's partly like the long drawn out piano-note heard at the end of a Beatles song - it goes on way longer than you normally hear a piano do, get progressively more rumbly. They did it by turning the mixer channel volume flat out so that you hear the studio reverberation that isn't normally noticed.
I believe the WW2 sonobuoys may have had an AGC circuit which would limit the gain therefore the volume you hear. The noise you hear from the buoy stays constant then slowly fades. This circuit also avoids overloading the preamp and the other amps in the buoy. The hydrophone was a pizeoelectric and would generate a large output into a circuit that would "clip" it to avoid overdriving the input circuitry.
@@tomtrenter3208 In World War 2, electronics was vacuum tube based. Tubes draw a lot of electrical power and were expensive, so for battery powered disposable things like sonobuoys there was a powerful incentive to keep the circuitry as simple as possible. So I would not be surprised if they didn't have AGC - they probably just relied on overdrive/clipping. But the airborne receiver, not disposable and running off the aircraft 28 volt bus, would have certainly had AGC.
AGC in vacuum tube circuitry requires variable slope tubes, which with battery tubes means low gain - a further incentive to not have AGC. But there is a circuit trick they could have used: back-back copper oxide diodes shunting the signal after the first tube - this can give a quasi-logarithmic response which doesn't mash the signal components together like hard clipping does.
I find stuff like this extremely interesting. I've had an idea to get a hydrophone and record ships passing by in a local channel to see what they sound like. I wish more stuff like that was accessible, but I've only been able to find a few such recordings out and about.
Great video. Thanks
Damn, never heard of the mouse trap, thought I knew it all.
I gave this video a thumbs up based only on your correct pronunciation of the word "buoy". Thank you.
Craziest thing I have seen recently was the discovery of the deepest wreck ever, the WW2 ship who's name I forgot, something like 15k feet down. Anyhow the ship was in bad condition as one would expect except for the entire battery of completely attached and ready to deploy depth charges still right on the back with no harm.
Depth Charges and Sonar Pings - driving Mother Nature mad ever since, and no wonder so many men became Alcoholics after the War...
Das Boot was as close to a 'Documentary' as you'll get without the smell, while U-571 provides only what's missing from Das Boot.
Respect to those who served.
Well done video. Fantastic!
I would be interested in hearing more about the debate & controversy over “lethal range.”
It’s also funny to me that the source before a graph purporting the exact lethal range, says the whole idea of lethal range is in question.
Yeah I've heard submariners say they were only lethal if they exploded below the boat. Explosions to the sides or above were relatively ineffective since they took the path of least resistance.
These days you have to be real careful and watch you say. Videos on boring but interesting. Semper Fi Semper Fortis
This is really cool stuff. More videos please
It's like you can hear secondary explosions on the sonobuoy recordings.
How deep was the water in which the recordings where made? Was there a thermocline? Both conditions would trap any noise causing reverberations. Regardless, the recordings are pretty cool.
I would think with the amount of energy release with a depth charge a thermocline would be transparent. I know oil exploration seismic ships use high pressure compressed air to read the subsurface formations and after they shoot the air they listen to the return for over 20 seconds. When I was in the Navy we had buoys that sent back temperatures as the probe was lowered from a spool of wire. I worked on the aircraft’s avionics.
@@Chris_at_Home I was a Sonar Man in the Navy. The buoy you mention is a bathythermograph. We launched them from the ship directly into the ocean. From the read out we would determine the active and passive ranges for the sonar gear.
In the case of explosions of this nature a sharp thermocline will act like a mirror reflecting most of the sound energy back to the surface. As the sound hits the surface the difference in water and air density interface will cause the sound to reflect back towards the ocean floor. The waves would also cause the sound to scatter as well. That's why the explosion is heard for so long. The leading edges of the sound hit the transducer first and it takes some time for all of the scattered elements (trailing edge) of the sound to reach the buoy as well. This is true for light as well (lasers and such).
The same thing happens in shallow water. The sound hits the bottom of the ocean, bounces back to the surface. As with the sound scattering has it hits waves, the same is true for the bottom of the ocean.
In both cases the water eventually absorbs the sound and the noise can no longer be heard. However, there are documented cases where sound channels allowed sound to travel thousands of miles.
Very interesting - now I really want to know what depth bombs sounded like to a German WW2 GHG.
Quite unlike what you hear in this video. The sound effects in the unmentionable movie are probably quite realistic.
Watch "Das Boot" best submarine movie ever made.
Hollywood doesn't know squat about underwater sound and sonar!@@keithammleter3824
It’s all good. That movie was pretty bad anyway. 😊
👍👍👍👍👍
Wasn't this released yesterday, please explain.
It's explained at the start of the video , 0:18 !
Question: would Germany have won the war if they had developed the proximity fuse in early 1941? Certainly, I think that if they had done so, they would have completely destroyed all heavy bombers that were targeted towards Germany, where there was plenty of flak guns. Proximity fuses may also have helped the Germans to shoot down the soviet Air Force as well.
There is no reasonable timeline that Germany wins WW2. Any timeline where Germany gets an advantage early on only prolongs the inevitable loss of Germany. After Operation Barbarossa, they had the majority of the world's industrial output coming down on them. There is no winning in that scenario, there is only prolonging the loss.
Pointless comment
More YT copyright crap...🙄🤦♂️
You use someone's content, you get the copyright strike by automatic bot. It should be common knowledge at this point. Solution - Do not use someone else content.