What can you hear?

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Hey all,

Im curious which of these you all can hear. These are ultrasonic sounds ranging from sounds anyone should be able to hear, up to that only dogs should be able to hear.

http://www.ultrasonic-ringtones.com/

I am able to hear many things most people either cant or dont notice..and this seems to support that I can hear things others cant.

Im curious what you can hear..so please post the highest you could hear

I could hear the 19.9 no problem. It really really hurts to listen to, but I can hear it.

"Or maybe you are a mosquito, you certainly can't be human.

The highest pitched ultrasonic mosquito ringtone that I can hear is 21.1kHz"

That's what I got. I can't hear 22.4 at all though.

The 21.1 I can tell is playing, but I can barely hear it. So I didnt count it.

Thanks for posting, this is interesting

I could only hear the 15.8

Whether or not you can hear the sounds on that webpage does not say anything reliable about which frequencies you can hear because your computer soundcard + speakers or headphones cannot be relied upon to accurately produce the stated frequencies.

When they make soundcards and speakers, they design them to reproduce music and talking well. They do not design them to be able to produce annoying high-pitch tones. If they can produce high-pitch tones, it is only by accident or unintentional side-effect.

So if you cannot hear one of those sounds, it could easily be because your soundcard or speakers are filtering it out or simply do not contain any hardware to reproduce that frequency.

And if you can hear one of those sounds, it could easily be because your soundcard or speakers cannot produce that frequency and instead produce the nearest frequency that they are capable of.

Unless you have some specialized audio testing equipment for verifying that the stated frequency is actually being produced, this whole test is meaningless. Standard consumer-grade computer audio equipment cannot be relied upon to accurately produce the stated frequencies.

I could hear the 21.1, but I have always had excellent hearing. Annoying if you have noisy neighbours.

I know that around Christmas, I think it was, they were doing a news article about a device to discourage teenagers and young adults from hangibng around ships ETC. it produces a sound at a frequency that they say can usually only be heard by under 30's. I'm 32, and I could hear it and it's bloody awful!

Julie

18.8 is the highest I can hear, though the next one up makes my head feel tight when it is playing, even though I can't hear it. I wonder where on that range the CRT television hum falls...

Yeah, I can pick up the television hum too.

True. I have this problem with my PC. It's just a stock, bottom of the line Dell. When you play the 18.8kHZ and above frequencies, I mostly just get some electronic crackle and a "sput" at the end. I can faintly hear the highest one over headphones (and thanks to my prefect pitch, I can say that yes, that's F), but nothing but my PC being annoyed for the ones between 18 and 24 kHZ. IRL, I often hear frequencies above 16 HZ, usually from electronics (and occasionally from the migrating birds we get around here), and it can drive me crazy. I thought I wasn't suppose to hear so well at 35! These mosquito tones (and cellphones in general) are the bane of my teaching life. It's one reason I am trying to get a job in an elementary school this summer. I wish I could afflict the same pain and agitation I feel hearing these sounds on the students to make a point, but that's against the teacher ethics. Pity.

LOL. I figure out I could get my sytem to play some of the tones it wouldn't play earlier by clicking on the lower tones in order and working up to those tones. But this my system decided it hated that, and now it won't even play the lower tones! LOL. Oh well.

Most soundcards have a so called brick-wall filter at around 19-20k on both inputs and outputs, it's a very high order (8th is not uncommon) low-pass. In other words most soundcards produce no significant signal above 20k.

(NTSC) TV hum is a mix of 15.75khz and 59.97hz.

FYI, the range 22.4kHz wasn't a sound. It was a trick. Select it saying that's the highest you could hear and the program will call you a liar because there was no sound.

I could hear 21.1kHz and am almost 25 years of age. So I am either a dog or a mosquito. Or both.

I don't think mine was accurate - I could just about hear the 19.9, BUT in physics we did an admittedly crude test, but it was with accurate equipment and it was an extremely quiet day (ie no discernable background noise) and I couldn't hear 18KHz. Also, the D and D# on that site sounded a minor third apart to me ... hmm ...

Now if I could only make my ears not hear those sounds...

Thanks for the response everyone. Quite interesting. I didnt know that soundcards might make this less accurate..but regardless it was still fun.

I can pick up the hum of my Dad's Outdoor Christmas Lights, in December.