Quote:
Originally Posted by Timmy
Were you using headphones?
My guess: the site you were on may have said they were giving you a 90 KHz tone, but, if you actually heard something, it was actually something else, much lower than 90K. No idea why they'd mislead you like that, though. 90 KHz would be tough for any normal speaker to reproduce.
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Correct. All speakers and headphones are rated to be able to produce at a specific audible range. So, the original poster is pretty much posting nonsense.