At 43, I can still hear 23kHz, which is better than my 11 year old! I remember doing a practical in a High School Physics lesson, where me and a couple of friends could still hear a 27kHz signal. Long time ago now...
I'm 52. I cranked it up through my stereo, and I could hear down to the 24 year old (18khz) if I cranked it up very loud. At normal volumes I could hear 15k clearly.
I bet most PC desktop systems can't even reproduce the more high pitched notes. So those of you who couldn't hear above 14khz or so, it may not be you. I know the published specs say they can reproduce to 20khz, but they probably can't, or not at a volume you can hear the tone.
My Logitech PC speakers are rated 20khz, and I could only hear 14k through them, even with Shure in the ear earphones plugged into them.
Last edited by firedog; 06-15-2009 at 03:52 PM..
Reason: accuracy
I'm 45 and I tested the tones out with my 16yr old beside me. I could hear the 15khz but not the 16. My son said that he felt more than heard the 16khz. Neither one of us could hear the 17, so we stopped there. I think I'll go back and try the others just to see if it's just a certain range that I can't hear. I'm careful about the volume level of radios, TV, etc. in our house, including personal headphones/earphones.
I tried all of this on my DELL laptop speakers (less than a year old) with the volume cranked up, but I think I'll take the ideas posted here and try some external speakers.
My wife is younger than I am, but she couldn't hear the 15khz. She wasn't too happy.
...I'm not completely sure if they are distinguishing between the actual "buzz" and the "pop" at the start and end of the tracks.
Haha....yeah, my wife (who is younger than I am) said she could hear the tone higher than I could but I had to explain that the pop of my laptop speakers made when the file started wasn't the tone.
It's also worth noting that it's possible not every speaker system can even reproduce the requested frequencies...so you almost need to try this test with a really good pair of headphones.
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I'm 46 and have Dog Whistle for WM5,
according to that I can hear 15.5 kHz but not 16 kHz.
I can hear pretty good, except in a crowd.
Only trouble is hearing my wife when she is in another room; she says she can hear me just fine, but I can hear that she is saying something, but can't tell what she is talking about. ... She thinks its just with her.
Hey, I have that too! Actually my trouble hearing my wife's voice is usually tied to the radio being on. The compression or some other quality of sound used in CBC radio broadcasting tends to mask my wife's average tone. If she's angry, or if there's laughter in her voice, no problem. But in an average speaking tone it just sort of melds with whoever's talking on CBC Radio 1. My kid's voices don't do that.
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I can clearly hear up to 20kHz on my headphones rated to 22kHz. 21kHz is sketchy, and 22kHz is non-existent, but I'm not sure whether it's me or my headphones.
I also generally have trouble hearing people with background noise. But it gets better if I concentrate, so I think it's something in my head. Shoddy manufacturing
I'd guess that speaker quality might play a large role in hearing some of the higher frequencies. I listened through the speakers of my Asus 901 netbook first, and found it somewhat more difficult to hear the upper levels of my range. Listening again with BeyerDynamic DT 880 headphones was a lot more focused in all frequencies.
Indeed, a great point, and one that I didn't think of when I made the post.
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I don't think the age/sound relation is accurate. Here's why:
I can't hear the 39 and younger tone, but I can clearly hear the 30 and younger, the 24 and younger (all three) and one of the 18 and younger. I'm 37, so I should be able to hear the 39 and younger, but none of the others.
Maybe there's another factor that the people making these mosquito ringtones are overlooking.
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