A technique that enables people to hear ultrasonic sources above 20kHz

Re:A technique that enables people to hear ultrasonic source... by cameronh90 on Wednesday June 09, 2021 @06:19PM (#27454036)

I'm still hearing up to 19kHz at 31.

Frankly, it just allows me to hear more high pitched squeals and "animal repellent" devices. My ability to interpret normal sounds and speech seems average.

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Re:A technique that enables people to hear ultrasonic source... by anonymousiam on Wednesday June 09, 2021 @11:48PM (#27456455)

I was the same way. At 58, my hearing is still "perfect", but I assume that assessment takes my age into account. I could always hear the whine of computer monitors, and was very happy when LCD monitors came out. I could even "hear" Ethernet traffic (10Base-T), but I never understood how or why. It must have been sub-harmonics and/or the PHY coupling transformers emitting ultrasonics.

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