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Hearing Damage over 20khz?

I own speakers that produce in excess of 40khz, yet the human ear can only perceive 20khz.

If something is uncomfortably loud we can hear, we know to turn it down but what if the frequency is out of our audible range?

Is it possible hearing is being damaged by something we can't hear?

I have read reports of people having ears ring after using speakers that can go beyond 20k, but I don't know if it's due to the sounds produced below 20k or above or both.

It would be horrible to learn I was damaging my children's ears or mine without knowing it.
vintagegroove

Showing 2 responses by elizabeth

elizabeth
6,726 posts
 
The sound pressure in the UHF range is so miniscule it would not g=damage your hearing.
The total wattage used for normal music is 9grossly extimated)
like if using 100 watts total,
90 watts for the woofer, 9 watts for the midrange and 1 watt for the tweeter, so once you get up to supertweeter ot would be like 0.1 watt...
Of course that could be changed and some crazy device could be putting out a SPL that will make dogs a block away go deaf.. How would you even know without test equipment?
elizabeth
6,726 posts
 
Someone had a link to a group of reviews of 24/96 downloads and did detailed examinations of the information and the spectal analysis.
The results showed no recordings downloaded had any information in the added high definition areas of the downloads, so they were basically Cd stadard downlaods.
Then some that did have 'something' the information was things like a TV in the area, as the signal at the exact hi frequency ultrasonic squeal of a video tube dispay.. etc.
So the information in a recording over 20,000hz, while theoretically interesting, is of zero practical application.
And is entirely of 'crap' that is present in the recording area, and not even from the instruments etc..
As no one tries to 'quiet' Hf noise over 20,000 hz no one can hear anyway...
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