I think you'd be surprised by how high your hearing extends.
I very much doubt that, in fact, I think you'd be surprised at how limited your hearing is! When I was a lecturer we routinely (informally) tested new students over about a 5 year period. The vast majority of the roughly 1,500 we tested were 18-21 year olds. Only once did we find a student able to reliably hear 19kHz, no one ever managed to hear 20kHz and the vast majority max'ed out between 16kHz-17kHz. At one stage the course leader felt there must be a problem with the testing as he was a bit fixated on the published 20kHz figure. He did eventually manage to get a class to perceive 20kHz but unfortunately, it was with their eyes, not their ears. He kept increasing the output level until eventually the tweeters melted and started smoking, at which point the students noticed!
Quote:
There are many misunderstandings about human hearing. Your ears pick up frequencies way above and beyond the 20-20.000 range ...
You do of course have some reliable evidence you can provide, to back up your extraordinary claim? By reliable, I mean tests which haven't later been proved incorrect, of which there are several which were later proven to be IMD and well within the range of human hearing.
I tested my own hearing, and found that it extends up to 25khz. And that's not really unusual.
1. It's literally unbelievably unusual! Again, what actual evidence have you got to support this claim? Through countless formal tests of many thousands of subjects over the last century, I've (personally) never seen documented any repeatable evidence of anyone hearing 25kHz reliably. For something to be "not really unusual" you're going to need 20% or so of people to be able to do it. Currently there's no evidence that even 0.01% of people can. So even if there is someone or even a few who can hear up to 25kHz, it would be far beyond any sensible definition of "unusual".
2. What is it you expect to hear? The violin is the highest pitched string instrument in the orchestra but it's highest fundamental note is only about 4kHz, beyond that it's only diminishing harmonics. Only 4% of the energy a violin produces is at or beyond 20kHz. Even if you could hear to 25kHz, I hope you're not trying to say that you hear up to that freq linearly, without a severe roll-off? So, not only is your hearing sensitivity at least greatly reduced at 20kHz but so is the actual amount of audio energy being produced. Add these two elements together and, what do you think is beyond 20kHz which can be heard, even if you were able to?
3. I've heard a number of audiophiles over several decades claim to have super-human hearing, to be able to hear well beyond 20kHz. I've never heard of one who was able to substantiate that claim though! On those occasions when their claims have been tested, the results have always demonstrated entirely normal/ordinary hearing response and their perception of hearing higher freqs either being due to IMD or more commonly, just wishful thinking or poor testing + wishful thinking!
Human bodies aren't made to precise numbers and measurements, which means there are random little differences. 20hz-20.000 is an averaged range ...
No it's not! No one has ever said that the range of hearing for every human being is 20Hz-20kHz. The averaged range would probably be somewhere around an upper limit of 14-15kHz. Experimental evidence, from nearly a century of testing, has lead to the obvious conclusion that 20kHz is the maximum upper limit of human hearing, not the average. Of course not every single human being has been tested so we can't prove absolutely that no one can hear above 20kHz. However, the conclusion of all these studies and experimental data is absolutely supported by the anatomical evidence, that there is no physical mechanism within the human ear capable of responding to freqs higher than 20kHz.
Your claims are not absolutely impossible but close enough to still be fairly preposterous. To stand any chance of being taken seriously, you are going to have to provide some truly exceptional evidence!!
G