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hootztoday at 1:05 PM1 replyview on HN

I guess lmao, but much more rudimentary, less reliable and with loads of issues, as it had to blast piercing sounds through a speaker and then capture those with a microphone. But it was pretty cool when it worked!


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skinfaxitoday at 1:33 PM

Did you explore using frequencies outside the range of human hearing?

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