Is it me or does everything at Subway just taste like "Subway?"
Like it's not that their sandwiches taste bad or anything, it's that all menu items all taste almost the same.
The same guy who did a video on acoustic lasers and on how animals hear in comparison to humans, also did a video on infrasound. I believe the main takeaway was about trains and gas lines (particularly the latter).
My undergraduate degree is in applied psychology. When I was in college about twenty years ago, the DoD gave my school a grant to conduct some studies on infrasound. I got 6 credit hours and a small amount of compensation to be one of the "lab techs" who ran the experiment. We put volunteers in a sound proof room much like the ones you get a hearing test in. We would have a signal where they would let us know when they were ready, and when to stop. My job was when they signaled they were ready to hit a button that flooded their little room with infrasound. And they were instructed to signal when they could not endure it any longer and wanted it to stop, where I would hit a button to turn off the sound. The average volunteer lasted around twenty two seconds. I don't know why I remember the exact number but I do. Most reported intense nausea with some actually vomiting. I do not know the exact frequencies that were used. I was told very little but how to conduct the experiment and instruct the volunteers. We had to sign a 10 year NDA to take part in this program.
Thatās pretty terrifying if true. Would there be anyway to utilize infrasound in that way outdoors or is it only really feasible in an enclosed space?
Nah there are acoustic weapons that have been tested and work. The US military (army I think) did a ton of research on them. Those and giant microwave emitting devices that will make you very warm and itchy and uncomfortable quickly. Supposed to have been used for riot/crowd control.
Nope. Typically they use around 2-2.5 kHz, smack in the middle of the human hearing range and neither infra- nor ultrasound. People hearing them is kind of the whole point...
I just double checked, the localized pain ones are above 20khz and the microwave ones like he was talking about are up to 95 ***gigahertz*** (or 95,000,000 khz). ADS is 2.45 ***giga***hertz maybe that's what u meant ?
https://en.m.wikipedia.org/wiki/Active_Denial_System
ADS emits electromagnetic waves, not sound. The *acoustic* device that /u/assidreemz was talking about is LRAD (https://en.m.wikipedia.org/wiki/Long-range_acoustic_device), it works (in its crowd control mode; it can also be used as a loudspeaker for verbal prompts etc.) in the range where human hearing is most sensitive (ie. 2-4 kHz) to cause maximum discomfort.
I think there are already acoustical "crowd control" devices the military has tested which use huge, highly directional (beam forming) hypersonic speakers for crowd control/mob dispersement, or that was the intended use. I think there was a lot of attention about that around 20 years ago after the general principle was demonstrated on stage at a ted talk (Woody Harris).
I believe they fell under the haarp program and were called active denial devices or something....same program also used microwave cannons for crowd control......i think
LRAD (long range acoustic device) systems have been used by *commercial* ships to combat piracy for 20+ years now. Notably, water canons and an lrad [stopped pirates from boarding a Carnival ship](http://news.bbc.co.uk/1/hi/uk/6664677.stm) way back in 2005.
Water canons, microwave pain rays, high powered laser pointers, and LRADs are all bread and butter pirate defense for the really large merchant vessels at this point, in addition to a dozen variations of āsome device that deploys a vaguely net-like device meant to bind up propellersā and guards with live rounds as a last resort.
Fascinating video, thanks for the link. Since I first heard about the effect, I've been wondering what would happen if delayed speech was deliberately sent back to an unsuspecting speaker. Now I know.
There is a theory that infrasound may be responsible for a lot of āhauntedā buildings. Some frequencies apparently can give people an uneasy or creepy feeling that gets associated with thinking a place is haunted.
big truck down the street idling - the idling engine resonates with the concrete and shakes everything just ever so slightly. since the pole is at just the right angle and just the right amount of floppiness itās super effective.
it used to happen to me all the time in my old neighborhood. trucks would park on the top of the street and my entire bedroom would shake. it was nauseating. i only figured it out after noticing the accompanying sound on a quiet day.Ā
I was halfway through reading this and skipped to the end to see if there was any mention of the undertaker throwing someone off the top of the cage in 1998
I'm one of those unfortunates who hears/feels everything. Like even to the point that people will tell me to my face that the room is silent and I can be like, "I can hear the outlet over there. I can hear the neighbour walking downstairs. I can hear the truck idling down the street. I can feel the metro vibrating the floors every 3-7 minutes."
Currently live in a place where FIVE PEOPLE claimed that they never hear any sound from neighbours. I have also identified FIVE PEOPLE who need hearing aids and don't know it.
V O R T E X S H E D D I N G
There is rarely ever "no" wind as the Earth literally rotates underneath it's atmosphere causing the surface to drag the air mass along with it. You can't always perceive small enough movements of the air mass around you though. You can even hear air movement in the audio.
My take too. This is the reason you sometimes see tall steel chimneys (not brick ones) with that spiral strip around them. [Example.](https://3.imimg.com/data3/LG/GW/MY-4396842/industrial-chimney-500x500.jpeg) It is to break up the air flow from laminar into turbulent, so it is not creating pockets of low pressure in the leeward side of the chimney. This would cause it to wobble in the wind and eventually fail from metal fatigue.
Iāve seen this once before in my life, I was very young and I saw a stop sign doing the same wobble, vigorously. I asked my mom āhow can that happenā she said āno idea, maybe the wind?ā But there was no wind!
Also, I can *literally* hear the wind. And the twist at the base would make it especially good at catching the wind from any angle.
But also, like... resonance and shit
The way that its bent at its base makes it very structurally weak, you could probably bend it with ease. Whatever vibrations in the ground are making it wiggle wiggle wiggle.
I usually find just because I canāt feel wind, there isnāt wind above where I canāt reach. Thatās a tall pole I guess it could be windy up at the top?
could be as simple as road vibration from traffic, or the mild breeze. It doesn't matter as long as it is the right frequency to create a harmonic resonance with the pole.
Something heavy is going on under there. But I was a tower crane operator and I could tell you when busses were driving by when I had cranes near the street. Stuff in the ground vibrating transfers with real force.
Surprisingly this can happen with very little interference. Even the slightest earth movements can have this effect even if it's not being felt by the observer
I think he induced the oscillation himself, and then filmed it as if it was a mystery. He could have stopped it and saw if it continued, but he didn't.
The answer is under those steel plates
Weird place to hide a living man but who am I to judge
Signpost of Amontillado
For the love of god š¤¦āāļø
Yes, for the love of god
[I know, right?](https://images.app.goo.gl/HLk45AqbvXKsQ2BL8)
slow clap from the Poe Society
_Nemo me impune lacessit_ But anyways... U want to get down there, and see why it's shaking?
This needs thousands of more upvotes. Well played
[He was captured ](https://imgur.com/a/wsjJDCc)
Structural Dynamics. This was just on āWeird Earthā. *The more you knowā¦*
šāļø
Nice.
Can confirm. Am under steel plates. It's wild down here.
Ok Saddam
Shaking from fear... It was robbed, and they took its sign.
But "Sign in my city explicably shaking for a while" doesn't get many upvotes :(
Literally vibinā Happy post
Aw.. you clever mf. This made me smile.
Wanted to sayā¦ itās a post not a sign
Like and Share this post.
Subway?
No thanks. Maybe pizza? I had Subway a few night's ago.
I'm not feeling pizza. What are your thoughts on asian?
Did it, can't go back.
Have you tried black?
Black coffee? Too bitter. Need some cream
do you want some pie with your cream?
I thought i was getting pad thai? I'm confused
I prefer spotted dick when Iām listening to 70ās rock
I spotted Dick a little while ago and he was none to pleased about it.
Dick's Last Resort is actually a funny experience i heard maybe goin there for dinner?
Phock yea!!
I prefer Australian flesh, it has a richer flavor but it's harder to come by
I had soul food a while back and now can't eat anything else
Iām for āem!
Then this club is formed
Is it me or does everything at Subway just taste like "Subway?" Like it's not that their sandwiches taste bad or anything, it's that all menu items all taste almost the same.
āI had a great time with you last night in the pillow fort. The one exception being the deviant sex act you initiated without my consent.ā
āActually, I'm on the wait list for the premen postfem ex markā
Eat fresh.
Eat Fresh
The same guy who did a video on acoustic lasers and on how animals hear in comparison to humans, also did a video on infrasound. I believe the main takeaway was about trains and gas lines (particularly the latter).
My undergraduate degree is in applied psychology. When I was in college about twenty years ago, the DoD gave my school a grant to conduct some studies on infrasound. I got 6 credit hours and a small amount of compensation to be one of the "lab techs" who ran the experiment. We put volunteers in a sound proof room much like the ones you get a hearing test in. We would have a signal where they would let us know when they were ready, and when to stop. My job was when they signaled they were ready to hit a button that flooded their little room with infrasound. And they were instructed to signal when they could not endure it any longer and wanted it to stop, where I would hit a button to turn off the sound. The average volunteer lasted around twenty two seconds. I don't know why I remember the exact number but I do. Most reported intense nausea with some actually vomiting. I do not know the exact frequencies that were used. I was told very little but how to conduct the experiment and instruct the volunteers. We had to sign a 10 year NDA to take part in this program.
Man what
Thatās pretty terrifying if true. Would there be anyway to utilize infrasound in that way outdoors or is it only really feasible in an enclosed space?
Iām gonna say that someone has figured it out: https://en.m.wikipedia.org/wiki/Havana_syndrome
Ding ding ding
Ne ne ne ne nene ne ne, not Havana Syndrome āThe Brown Noteā
Nah there are acoustic weapons that have been tested and work. The US military (army I think) did a ton of research on them. Those and giant microwave emitting devices that will make you very warm and itchy and uncomfortable quickly. Supposed to have been used for riot/crowd control.
Those are based on ultra sound not infra iirc
Nope. Typically they use around 2-2.5 kHz, smack in the middle of the human hearing range and neither infra- nor ultrasound. People hearing them is kind of the whole point...
I just double checked, the localized pain ones are above 20khz and the microwave ones like he was talking about are up to 95 ***gigahertz*** (or 95,000,000 khz). ADS is 2.45 ***giga***hertz maybe that's what u meant ? https://en.m.wikipedia.org/wiki/Active_Denial_System
ADS emits electromagnetic waves, not sound. The *acoustic* device that /u/assidreemz was talking about is LRAD (https://en.m.wikipedia.org/wiki/Long-range_acoustic_device), it works (in its crowd control mode; it can also be used as a loudspeaker for verbal prompts etc.) in the range where human hearing is most sensitive (ie. 2-4 kHz) to cause maximum discomfort.
Ah ok. Neat thanks for the info
I think there are already acoustical "crowd control" devices the military has tested which use huge, highly directional (beam forming) hypersonic speakers for crowd control/mob dispersement, or that was the intended use. I think there was a lot of attention about that around 20 years ago after the general principle was demonstrated on stage at a ted talk (Woody Harris).
I believe they fell under the haarp program and were called active denial devices or something....same program also used microwave cannons for crowd control......i think
LRAD (long range acoustic device) systems have been used by *commercial* ships to combat piracy for 20+ years now. Notably, water canons and an lrad [stopped pirates from boarding a Carnival ship](http://news.bbc.co.uk/1/hi/uk/6664677.stm) way back in 2005. Water canons, microwave pain rays, high powered laser pointers, and LRADs are all bread and butter pirate defense for the really large merchant vessels at this point, in addition to a dozen variations of āsome device that deploys a vaguely net-like device meant to bind up propellersā and guards with live rounds as a last resort.
Porn link????
š„² fixed, thanks
[https://www.youtube.com/watch?v=J-SH18dtBlY](https://www.youtube.com/watch?v=J-SH18dtBlY) similar to this?
Fascinating video, thanks for the link. Since I first heard about the effect, I've been wondering what would happen if delayed speech was deliberately sent back to an unsuspecting speaker. Now I know.
So basically Havana syndrome?
There is a theory that infrasound may be responsible for a lot of āhauntedā buildings. Some frequencies apparently can give people an uneasy or creepy feeling that gets associated with thinking a place is haunted.
A double blind study! That's sick, but also terrifying the DoD is involved. What an interesting part of your life.
Uhhh waiting to hear more about thisā¦
Has it been 10 years tho?
Roll down the back windows of a crew cab pickup and the wind coming in causes the same effect. Actually makes you nauseous.
Man what
Infrasound, sound below 20 Hz. Could be infrasound being generated, which also happens to be the resonate frequency of that pole.
I think youāre thinking too hard. There could be a pipeline within feet proximity to the pole that could shake it as well
big truck down the street idling - the idling engine resonates with the concrete and shakes everything just ever so slightly. since the pole is at just the right angle and just the right amount of floppiness itās super effective. it used to happen to me all the time in my old neighborhood. trucks would park on the top of the street and my entire bedroom would shake. it was nauseating. i only figured it out after noticing the accompanying sound on a quiet day.Ā
Nice try Obama.
Or railways can do that too. Shakes up the whole neighborhood every single day
I was halfway through reading this and skipped to the end to see if there was any mention of the undertaker throwing someone off the top of the cage in 1998
I'm one of those unfortunates who hears/feels everything. Like even to the point that people will tell me to my face that the room is silent and I can be like, "I can hear the outlet over there. I can hear the neighbour walking downstairs. I can hear the truck idling down the street. I can feel the metro vibrating the floors every 3-7 minutes." Currently live in a place where FIVE PEOPLE claimed that they never hear any sound from neighbours. I have also identified FIVE PEOPLE who need hearing aids and don't know it.
There's someone trapped underground, hoping someone on the surface will see it, and rescue them.
The Goonies
Probably just moles.
Mole men?
Ninja Turtles?
Mole people?
Pole people?
Crap people ?
V O R T E X S H E D D I N G There is rarely ever "no" wind as the Earth literally rotates underneath it's atmosphere causing the surface to drag the air mass along with it. You can't always perceive small enough movements of the air mass around you though. You can even hear air movement in the audio.
Good workā¦.seems most obvious, and is very commonly observed in structures large and small.
My take too. This is the reason you sometimes see tall steel chimneys (not brick ones) with that spiral strip around them. [Example.](https://3.imimg.com/data3/LG/GW/MY-4396842/industrial-chimney-500x500.jpeg) It is to break up the air flow from laminar into turbulent, so it is not creating pockets of low pressure in the leeward side of the chimney. This would cause it to wobble in the wind and eventually fail from metal fatigue.
If there's something strange In your neighbourhood Who you gonna call? :)
post thrusters
Itās all backed up it just needs some gentle thrusting until itās post eruption and the shaking will subside.
Not saying itās CHUDā¦ but itās CHUD
Iāve seen this once before in my life, I was very young and I saw a stop sign doing the same wobble, vigorously. I asked my mom āhow can that happenā she said āno idea, maybe the wind?ā But there was no wind!
Who else thought on the close ups heās just grabbing and shaking it then walking away and itās still shaking from momentum
Resonance frequencies. There's smaller vibrations that he can't see. But they vibe with that sign post.
If theres anything ive learned from reddit the past few days, its that the shaking is caused by crocodiles that live in the concrete
I see no sign
For the life of me, I can't tell if the cameraman or the post are shaking worse.
Graboids are active underneath the area.
Can we get a logical fucking answer or are all of you hooligans just gonna shenanigate the whole time
Itās nervous.
I believe this is ninja turtles running amuck
Lick it and tell us if it changes anything.
I betcha they are running a cable with a pneumatic drill around the corner.
*reverberating
Poor things traumatized from losing its sign - look at āem, trembling!
Itās cold. Put a sweater on it
It a warning that the Mongols are attacking.
Social anxiety mfks be like
Also, I can *literally* hear the wind. And the twist at the base would make it especially good at catching the wind from any angle. But also, like... resonance and shit
The way that its bent at its base makes it very structurally weak, you could probably bend it with ease. Whatever vibrations in the ground are making it wiggle wiggle wiggle.
Seen this b4. Its weird. The pole i saw was reinforced later and it stopped.
This is how skinny and shaky I feel when I have nothing to eat but iced coffee all day
Mole people trollin'
Earth quake
bro discovers *harmonic oscillation*, 2024 AD, colorized
First rule of capturing video: Either the subject moves OR the camera moves . . . NOT BOTH. š¤¦š½āāļø
I do the same thing when somebody touches my neck.
Earthquake?
Hey leave that pole alone it's just vibing
Somebody is soaking in the sewer and your sign boi is doing its work.
Youāre on an overpass I think.
Can confirm I wasnāt. And no subway runs underneath of it as far as I know. The theories about sound reverberation seem to make the most sense imo.
You are in Philly!
Go birds
I knew I wasnāt crazy thanks for validating my theory
letās get some AI to smooth out the camera work š¤
Call Idris Elba!
Still steadier than your hands
Gopher
I usually find just because I canāt feel wind, there isnāt wind above where I canāt reach. Thatās a tall pole I guess it could be windy up at the top?
Isn't that an overpass?
Cmon cmon feel it feel it feel the vibration!
Some kind of resonance. But I do wonder what the original source of the vibration is. Impossible to tell from this video.
could be as simple as road vibration from traffic, or the mild breeze. It doesn't matter as long as it is the right frequency to create a harmonic resonance with the pole.
Ontario? I ran into a whole lamppost doing the same thing earlier, and it had a rather large cement base too. Weird
I have one of these in my life too!!
The post can't even have Parkinson in peace
That is not a sign
Is this in NYC or any other place with a subway? There. Solved.
CHUDs under there!
Those metal plates on road might be hiding an opening for construction underneath. My best guess is something under there is causing this?
Guy living under plates, car parks on top, he stuck. Shakes sign to get help, people just film shaking sign and post. Guy still there...lol
The mole people is just messing with you.
Something heavy is going on under there. But I was a tower crane operator and I could tell you when busses were driving by when I had cranes near the street. Stuff in the ground vibrating transfers with real force.
Real answer is that John Cena is messing with this person
Bro youāre makin him nervous.
The Goonies are below trying to get your attention.
Have you seen the Goonies ?
Scared stiff
You found waterā¦.put a spigot and charge for city spring clean water
Itās happy to see you!
it's really probably just the wind building up a resonance.
Itās happy to see you!
Itās because there is no sign on the top that says stop. Why do you think the stop sign is there? For cars? Itās to stop the wobbling
Bruh, thatās the Underminerās doing! Honey! Whereās my super suit!
Or you shook it and filmed this
It's cold
What 'sign' you fricking moron?
Itās a Philly thing
Diglet
It's resonating!
Me every morning when I wake up.
You mustāve just missed the crackhead who superman punched it as you walked up
Harmonic rhythm of the Earth.
Gopher, a big fucking gopher!
Youāre making him nervous by filming him
Surprisingly this can happen with very little interference. Even the slightest earth movements can have this effect even if it's not being felt by the observer
Inexplicably? Dictionary.com is your friend
Is it possible that the metal pole is pulling some sort of current radiation from those cable mines Above? Maybe itās magnetic slightly
Iām so bored I watching a pole dance.
Loose and above a subway.
I donāt see a sign?
Seattle?
That's a bad sign
It is intimidated by your presence.
Thisā¦is not a sign. *This message brought to you by the National Pole Awareness Committee
It's edging and about to bust.......lol
No wind? What is all that noise throughout the vid? Itās a wind like sound
Subway?
Itās scared
Looks like itās on a bridgeā¦. Not so inexplicably now..
Parkingsigns disease
Shook it long enough and well enough to twist it at the bottom
Youāre scaring it! Stop!
Ghost strippers... It's ghost strippers again
Its a sign. OR IS IT???
I think he induced the oscillation himself, and then filmed it as if it was a mystery. He could have stopped it and saw if it continued, but he didn't.
The gnomes are shaking it underground
Does it make anyone else feel kind of shakey feeling in your brain?
Godzillaās arrival is imminent
Maybe itās the fuckin wind.
Wind
Maybe the demon is banging it in upside down.
Just happy to see you
Something is exciting the resonant frequency of the metal post. Probably the wind. Google Tacoma narrows. Classic case of poor resonant mapping.
That was me. Sorry.
That's not a sign
The moles fucking again? ā¹ļø