SynthMaker

This is really weird. 4kHz Sinus in my bedroom...

Archive · 2010 14 old posts

From the original SynthMaker forum (2004–2014), with its members’ names and dates.

aliasant ·

Yes. Since yesterday morning I have a 4kHz sinus tone in my bedroom.

Yesterday when I woke up and took out my earbuds I found myself in the middle of a very annoying sinus tone. At first I thought it was Tinitus but when I realized that the tone changed depending on were in the room I was I knew that this is not in my ears/head. Its a real tone that in some specific spots in my bedroom will cancel itself out. In one location near the door when the door was halfway open I could cancel it out completely but if I moived my head a cm or even less it came back. Its quite loud too and extremely annoying. If I leave that room I can still hear it but a lot less. If I close the door its almost entirely gone and my earbuds seems to work. I could sleep this night even thoug not very well.

This morning I decided to record it so that I have some kind of proof that Im NOT hearing things even thoug I am 😉 http://martin.rodensjo.se/assets/4kHz%20Sinus%20in%20bedroom%20.wav

Thats the sound recorded at 96kHz. Background noise is because I left the bedroom window open. I have tried closing it but no change to the signal.

I have also turned off all electric stuff I have in there. Its just a tv, which was my first suspect,a cabletv modem and a clockradio. Its not coming from them or any other electronics in my apartment.

If this continues I think I will have to move out of that room entirely.

Help please. What the heck is this?

infuzion ·

My CRT monitor will do this when the display is mostly white.

aliasant ·

infuzion wrote: My CRT monitor will do this when the display is mostly white.

Lol

Well. I don have a crt 🙁. Only a 24 flat and its in my work room on the other side of the apartment and its not coming from that one..

I have 2 ideas. The first is that a neighbour has gone on vacation and something came on sounding like this from maybe his bedroom that is nex to mine.. or similar. But what kind of electronics would give a signal tlike his one and why do I only hear it well in my bedroom?

The other possibility might be that somewere someone raised somekind of transmitter and by coincident my bedroom is in the middle of its path some how. Not my livingroom wich lays next to the bedroom with windows in the same direction....

I dont get it.

infuzion ·

So many possibilities... you'll have to find the direction/spot of the source first. I've heard of weird things becoming radio receivers, like a heating radiator. Also, transmitters are everywhere now with all those iPod to radio transmitters around.

Acrobat ·

2 hypothesis: -air conditioning -security systems 😉

infuzion ·

Acrobat wrote: -security systems

Which could include those crazy baby monitors. Or something is being picked up by your power mains & heard on a speaker somewhere. If you want to pay for a plane ticket, I can help find your problem! 😉

Disco_Steve ·

Have you unplugged the power supplies to your electrical equipment not just the equipment itself. My dads laptop power supply wines like nothing else! And my phone charger emits a whole host of strange noises!

My neighbour has a motor bike, and it beeps every minute to let you know the alarm is on. It is SO annoying ARRRR!!

aliasant ·

Lol.

I unplugged every cable in the room with no success. It sounded as if it came from the middle of the room almost. THen it hit me.

I have this rowing machine that broke down some months back so I havnt used it. Been planning to buy a replacment part if I can find one but summer came and rowing dopesnt feel that fun in the summer 😉

On the back of the info display for the machine there was a cord that I unplugged yesterday but when I looked closer there was also a battery hatch... I opened that one and unseated one of the 2 R6s and voila½! 🙂 Finally.

Wonder why the heck that one started sounding like that. Maybe to warn me that the batteries were dying but the batteries kept that damn signal sounding for 36 hours.... so they cant have been tha bad......

Thanks for the help. Without it I would still think it came from a neighbour or at least not from my own room.

P F E E E W :::::..............½! 😀

Andrew J ·

Glad you found it Martin - silence at last!

My stepson had a problem with his watch the other day - it had a continuous high pitched whine. So he put it underwater in his drink bottle. Go figure!

For some odd reason he later drank from the bottle, after the battery had started leaking. Kids do the dumbest things!

aliasant ·

Andrew J wrote: Glad you found it Martin - silence at last!

My stepson had a problem with his watch the other day - it had a continuous high pitched whine. So he put it underwater in his drink bottle. Go figure!

For some odd reason he later drank from the bottle, after the battery had started leaking. Kids do the dumbest things!

LOL & Eeuuw.

I wish I had a pool to drown my rowing machine in!

oddson ·

I was staying at my mum's a few years ago and was perplexed by an intermittent electronic chirping sound. From her basement it sounded like it was coming from upstairs through the floor and from upstairs it sounding like it was coming from downstairs through the ceiling. It was louder in the middle of the house than on the edges.

My first thought was a smoke detector but I disconnected her hard-wired one (that was very near to the apparent source of the sound) and took the battery out of the other but the chirping continued. From there I started trying less and less likely sources to no avail.

Turned out there was a third smoke detector with failing battery buried under dish-towels in the back of a bottom kitchen drawer so that most of the sound was projected downwards into the floor. It took me hours to find it because the chips were a minute or two apart.

infuzion ·

aliasant wrote: I have this rowing machine that broke down some months back so I haven't used it. Been planning to buy a replacement part if I can find one but summer came and rowing doesn't feel that fun in the summer 😉

Oh, you are so very wrong; summer is the time for rowing!

See, that guy is sure happy he gets to row. 😈

TomC ·

infuzion wrote:

See, that guy is sure happy he gets to row. 😈

I'm very sorry that I've never answered your phone call, infuzion, but see, there's barely place for me and the 4 girls 🙂

Tom

aliasant ·

infuzion wrote: aliasant wrote: I have this rowing machine that broke down some months back so I haven't used it. Been planning to buy a replacement part if I can find one but summer came and rowing doesn't feel that fun in the summer 😉

Oh, you are so very wrong; summer is the time for rowing!

See, that guy is sure happy he gets to row. 😈

🙁 🙁

My rowing machine looks NOTHING like that 😠

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