25000 Hz clean pure sine wave TEST TONE 25 khz frequency

25000 Hz sine tone to test your speakers or headphones.

Humans can detect sounds in a frequency range from about 18 Hz to 20 kHz. (Human infants can actually hear frequencies slightly higher than 20 kHz, but lose some high-frequency sensitivity as they mature); the upper limit in average adults is often closer to 15–17 kHz. If you “hear” frequencies lower than 18 Hz, you might just be hearing harmonic distortion.

If you can´t hear the tone in this Video, that´s normal :)
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If you have any suggestions for future videos, please let me know in the comments below :-)

▬ Test Tone Playlist ▬▬▬▬▬▬▬▬▬▬

▬ Image source ▬▬▬▬▬▬▬▬▬▬▬▬
Lizenz: CC0 Creative Commons

DISCLAIMER: Loud sounds can potentially damage your hearing. When playing one of our videos, if you feel uncomfortable, the sound may be too loud for your ears. Please do not place speakers right next to a person’s ears. If you have difficulty hearing or hear ringing in your ears, please immediately turn the volume down or discontinue listening to the sounds and consult an appropriate professional. If you have significant difficulty sleeping on a regular basis, or feel tired during the day, please consult an appropriate professional. The sounds provided by this Youtube channel are for entertainment purposes only.

Thanks for watching!

[Ghosty_SS]

With headphones and full volume, i thought i didn't hear anything, but when i stopped the video, i realised the difference

[joseluis]

I had a very annoying dog next door. Seems every time I play this from my phone, the dog stops barking. So I believe it works. Thank you soo much.

[tonio]

most basic speakers are not able to play a frequency this high, if you have a high end surround sound or some high end audio equipment or headphones then your speakers may be able to hit this range. You can feel it more as opposed to actually hearing it. It feels sharp when close to the speaker. For those who can not hear of feel a thing it has to do with the speakers you are playing this out of. Secondly click the gear settings in the YouTube video and make sure the quality is playing at 1080p at a minimum.

[zillertalernazihass]

I checked the sound. There is a sound at 5026 Hz and a second one at 25000 Hz. Thats the reason why so many hear it. You hear the 5026 Hz sound.

[puttingwarheadsonforeheads]

I have had bats in my attic in the summer and winter. I heard it at 2am like I do now and it’s incredible how quickly they start moving to leave my house. I have a couple stragglers but it’s getting host of them.

[SandyG]

This is brilliant!!! We have two Jack Russel's next door that just wont stop am going to use this!!!!

[RileyJane]

I stopped the video and the pressure went away. But restarted it and it came back

[KLove]

it's a sweep that's why you can hear it partially. my guess sweeps from 19000 to 25000

[ordinaryextraordinary]

this could just be 10 mins of silence and we’d have no idea

[ltshaw]

My dog does not give a fuck, shes just laying there sleeping 😂😂😂

[young-maniac-wrestling]

I can hear thus very clearly with out headphones

[Daedalus_UK]

Just put this through my speakers and turned it up to max. Had a neighbours cat start meowing outside my door and then pissed on the doorway.

[stfu]

Put your ear to the speaker and you could hear it

[jorgemercado]

It's not that I hear it it just causes ringing in my ear and a sharp pain behind the ear drum

[Patriotx-gxce]

Out ancestors knew frequency powers very well.
"Flower of Life" symbol used in Europe for millenias as recently discovered under a high power electron microscope is a cross section image of human DNA!
Tesla was right my Croatian country man but way before him they knew much more.

[timothypryor]

I ended up with a sympathetic ringing from something.

[kenjohnson]

I took my headphones off and realised that the sound was different.it sounds like a change in air pressure to me

[makaijovan]

From the comments... I've got a solution to my annoying neighbours dogs. Man this sound causes my ears to itch so good.

[ZanahoriasToto]

Lo que puede escuchar
**Sonido de tele**

[intbar]

This is 5000 hz above human hearing range, so i betnobody can hear it

Although thats the case, a high earbud/headphone can still probably produce this sound, so dont turn it up all the way or tou could cause a hearing damage