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Tested my kids - they could hear an alleged 21khz tone out of laptop speakers. The actual level of the tone doesn't matter - it was above my level of hearing. W
by isostatic 9y ago
Tested my kids - they could hear an alleged 21khz tone out of laptop speakers. The actual level of the tone doesn't matter - it was above my level of hearing. Wasn't a double blind, but they told me when it started and stopped based on a bash script with random intervals.
- BenjiWiebe 9y agoI'm 20 but I can still hear 20 khz, albeit not very well.
- isostatic 9y agoI could when I was 20, did a proper hearing test when I joined my company. 15.625khz was very noticeable - I scoffed at the old timers who couldn't hear it. I can no longer hear it. Still I can hear 1khz, so that's what's important.