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> This guy used 17 and 18 kHz as carriers. That is within the hearing range of young people, but a quick experiment shows that either my desktop speakers cannot
by lutusp 13y ago
> This guy used 17 and 18 kHz as carriers. That is within the hearing range of young people, but a quick experiment shows that either my desktop speakers cannot reproduce 17 kHz, or I have recently become too old to hear 17 kHz.
It's easy to find out -- go here:
http://arachnoid.com/JSigGen http://arachnoid.com/JSigGen
Enter any frequency you want. Chances are if you're over 40, you can't hear 17 KHz. I'm 68 and I can't hear anything over 6 KHz.
> ... or I have recently become too old ...
It usually takes longer than that. :)
- guiambros 13y ago> Enter any frequency you want. Chances are if you're over 40, you can't hear 17 KHz. (Maybe I should get better speakers...)
- lutusp 13y ago> (Maybe I should get better speakers...) Maybe, but you can test your hearing range more easily by putting on a set of headphones and experimenting with the linked signal generator -- reasonable quality audio headphones should easily be able to exceed your own hearing range on the high end. And chances are typical computer speakers should also be able to exceed a normal hearing range.