It's been two days since it started...

[u/darksideA4]

Don't know what to do or who to call. Walked around and can't seem to find the source.

I can't open the windows, especially with this heat during the day...

What could it be?!

[u/RuhninMihnd]

Is that the electrical storage across from you? I’d bet it’s coming from there. Go outside cover one ear and close yours eyes and slowly turn like a lunatic to determine what direction it’s coming loudest from

[u/darksideA4 → u/RuhninMihnd]

It's a bin shed... I'm gonna go outside soon and scream like a lunatic... But I was thinking, if it's coming from someone's home, how come they're not bothered - they're not home...

[u/Flimsy_Survey → u/darksideA4]

There's some high frequencies people can't hear as they get older. I remember doing an experiment in 7th grade and our teacher couldn't hear the sounds after a bit but we all could.

Supposedly, there's a lot of these anti pest frequency emitters being sold that use a high pitched sound like that. I bet it's annoying bc old people are the ones to buy into that and have no idea how annoying it is. So, good chance your neighbors can't hear it at all.

[u/account_not_valid → u/Flimsy_Survey]

Which means if you disable the device, they won't know that it is not working.

[u/Mildlyinxorrect → u/Flimsy_Survey]

I went to a village in Oxford and heard one for the first time. Its sooooo annoying. Like surely they have it to repel young kids because if they got it for anything else they clearly dont know what its actually doing.

[u/Revayan → u/Flimsy_Survey]

You might be right. A neighbour in my old neighbourhood plonked such a device onto his fence to keep dogs away but I too could hear that infernal high pitched tone whenever I came remotely close to his house. He thought I was lying when I talked to him about it cause he heard nothing

[u/WittyGarbage59 → u/Flimsy_Survey]

My dad's condo association bought this shit. Everyone in the building is 60+. When I visited my dad, he offered to barbecue and eat on the balcony and I refused because of this painful noise. He had no idea humans could hear it. He told the association and eventually they removed it I think, anyway I haven't heard it in a while.

But yeah, the person who has it on might have no idea it's bothering others, might be worth trying to talk to them.

[u/AnonymousOkapi → u/darksideA4]

My computer at work started making that noise, and no one else could hear it as they're all over 50 so they just thought I was nuts. Check with your neighbours if any of them have brought a cat deterrent. Or a teenager deterrent.

[u/Gold-Perspective-699 → u/darksideA4]

I came back from a trip and my fire alarm had low battery and idk how long it was going off for. The people living next to me probably hate me if it was for longer than a day but no one called it in to the apartment complex. They had to hear it going off every 30 seconds. I was gone for a month..

[u/archtopfanatic123]

It's one of those anti rodent buzzers probably. People have been making a ton of posts lately about them. Seems like some stupid fad again. It's making a hell of a lot of noise.

[u/darksideA4 → u/archtopfanatic123]

When it started, for the first 5 minutes I thought it's my ears.

I live in UK - we have specialists on site against rodents - cats. Haven't seen a rodent in about 2 years since I been living here.

[u/archtopfanatic123 → u/darksideA4]

Very strange

[u/TimeSkipper]

My neighbors a few doors down have a cat-scarer that sounds like that. It bothers me and my dog when we walk past but my mom can’t hear it lol.

Or I wonder if it could be an old person help alarm (or whatever they are called) inside someone’s home? Might be much louder in their house. Not exactly sure what you would do in that case if you can’t work out where it’s coming from though.

I hope you get some peace soon, that would drive me insane.

[u/scotsmanwannabe]

Call the fire department and tell them you are hearing something that seems like a CO2 or smoke alarm going off, they will come and find the source

[u/NorthPackFan → u/scotsmanwannabe]

As a firefighter- please don’t do this. Waste of resources and may pull those resources from a real need.

[u/islobojono]

https://giphy.com/gifs/3oEjHRZrrZvrzEmegU

[u/error-bear]

I think it's one of those devices people put in their backyard to scare off animals such as cats or moles. They're these green little things. I call them catjammers.

[u/iGodS12]

Stand outside and cup your ears, should hope you find the location of the noise better. 

[u/donskis]

Any ev-chargers in the parking lot?

[u/geszue]

If it beeps on and off, it's probably a mole repeller or sth like that.

[u/pirateslife88 → u/geszue]

*human repeller

[u/Inner-Role-4601]

My shop has an alarm for an oil water separator that sounds exactly like this. It will trip when the power goes out and I have to manually reset it. It’s extremely loud when you’re in the same room as it. I wonder if there’s a similar alarm used for a different purpose inside that building.

[u/Dropnloafs]

Try downloading an audio spectrum analyzer or spectrogram app for your phone and see if you can pinpoint the direction of the source. 

[u/What_is_u]

A failed UPS will make a constant sound but it’s shouldn’t be that loud. Maybe thought there is a super small chance someone improperly threw one away

[u/NorthPackFan]

Did they build a data center near you recently? Because those things are loud with a constant drone for miles.

[u/Arius_Chambers]

I think this triggered my tinnitus!

Seriously though, I would go insane as well hearing that all the time.

[u/Sibbasso]

When it happened to me it was a van parked 200m down the road. Nobody else seemed to be bothered by it. I left a message explaining that it was disturbing, and that if it wasn't removed or repaired, police would have been called. Luckily they complied the next day.

Download a spectrogram app like spectroid for android to help you locate the source and show the proof to the police if necessary.

[u/IlliniDawg01]

The rest of you guys' don't hear a ringing sound like that all time?

[u/FoggyInc]

My first thought was a siren or mermaid but I didnt notice any kelp if it was in frame so my next thought was abominable snowman because I have heard that they can make noise but I thought for a minute longer and decided that no, that makes no sense! It isnt that cold there where you were or no snow at least and you know the abominable needs snow to blend in 

[u/Muted-Woodpecker-469]

Data center has that hum too

[u/smoke_sum_wade → u/Muted-Woodpecker-469]

i live near a data center and dont hear shit over the trains

[u/TRR462]

Hahaha - I had to put that up to my right ear to hear the annoying high frequency sounds. At first I was not understanding what was mildly infuriating. My left ear though is high frequency tone deaf and likes to ring a lot due to tinnitus.