Yah my cat was getting annoyed at the speaker and kept meowing at me as I went up the scale. Cats actually can hear even better than dogs, up to almost 80 000 hz, dogs get to around 44 000 and humans usually top out at 17 000.
Bats can hear up to 110 000 in order to use their sonar effectively, although there are some blind humans who use the low frequencies we can hear as a crude form of echolocation as well. I tried to learn how as a kid (ok, so I was a strange kid) but never got the hang of it.
I could hear them all clearly except 22.2 or whatever.. Can anyone else clearly hear the hum of a CRT tv if its on in the house? It can have no volume and I can hear its whine from almost anywhere.
19.9 for me. I had a buzzing CRT monitor at work (actually still do... swapped it twice but both times they just gave me a new CRT instead of the LCD I wanted). The IT guy responsible for them didn't seem to hear them at all (or at least not very well), whereas I could hear them from outside my cubicle.
I think though that it's more that I can hear low volume sounds really well where there's low ambient noise than a frequency thing.
Loud noise at certain frequencies can destroy the ability to hear at those frequencies but still allow you to hear tones above and below that frequency. You end up with gaps in your aural perception that you don't notice because your mind fills in the empty spaces unconsciously, but in a case where a pure tone is played on its own the absence becomes identifiable.
So I wouldn't worry about it, especially as nothing can be done - what's gone is gone. Unless a dog whistle is going to save your life one day, not hearing ultra-high frequencies is of no real importance.
Sorta like when a woman is nagging at me all I hear is "blah blah blah, if you say sorry we'll have sex"?
I think you have to use good headphones to do this properly.
I can hear them all except the last, but there are a couple weird things I noticed:
Anything on this list above 16.7 khz sounds lower in pitch to me than any of the tones actually lower than it. I think I might actually be hearing a harmonic or something. Anyone else notice this? To me, the highest, 21.1 khz, actually sounds like the lowest tone on the list. (Or it could be the headphones)
I've really got to crank the volume to hear the tones above 16.7 khz clearly.
Related question: there's a line in Children of Men about how when your ear is ringing, it means that your ear is losing the ability to hear that exact frequency. Is that true, or just a line that's in there for poetic effect?
I think you have to use good headphones to do this properly.
I can hear them all except the last, but there are a couple weird things I noticed:
Anything on this list above 16.7 khz sounds lower in pitch to me than any of the tones actually lower than it. I think I might actually be hearing a harmonic or something. Anyone else notice this? To me, the highest, 21.1 khz, actually sounds like the lowest tone on the list. (Or it could be the headphones)
I've really got to crank the volume to hear the tones above 16.7 khz clearly.
The sounds of higher frequencies should definitely not sound lower.
Are you making sure that one sound has finished playing before you start the next one? If two different tones play at the same time it will create a new sound that you can hear that will sound lower.
Also, either there are a lot of 8 year olds on this board, or people are not telling the truth about what they can hear.
I could hear them all clearly except 22.2 or whatever.. Can anyone else clearly hear the hum of a CRT tv if its on in the house? It can have no volume and I can hear its whine from almost anywhere.
What you are hearing is 15734.26 Hz. The electron beam in a CRT television scans back and forth across the screen at that frequency.
