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原始链接: https://news.ycombinator.com/item?id=43406777

Hacker News上的一篇帖子讨论了一篇关于可定向传输至特定人耳的声音的文章,引发了一些有趣的观点。用户abhinav-t将其比作《少数派报告》中的定向广告。westurner推测其中涉及的量子算符,并提到了现有的超声波应用,例如超声波手术刀和聚焦超声治疗。moritzwarhier回忆起几年前读到过类似的技术,并惋惜地表示,侵犯隐私的技术似乎发展得更快。namaria将这一概念与干涉图样和3Blue1Brown关于全息图的视频联系起来。最后,jpcom询问这项技术是否依赖于两个不可听的超声波重叠产生可听声波,adrian_b对此进行了肯定,并补充说,虽然对人类来说是不可听的,但动物或专用设备可以听到。该帖子突出了这项技术的潜力及其与其他技术(从医疗到广告)的相似之处,并表达了对隐私的担忧。


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Sound that can bend itself through space, reaching only your ear in a crowd (theconversation.com)
28 points by amichail 4 hours ago | hide | past | favorite | 6 comments










Does it remind anyone of the targeted ads that John Anderton (Tom Cruise's character in Minority Report) hears when he moves through the city?


Which quantum operators can be found in [ultrasonic acoustic] wave convergences?

Surround sound systems must be calibrated in order to place the sweet spots of least cacophony.

There also exist ultrasonic scalpels that enable noninvasive subcutaneous surgical procedures that function by wave guiding to cause convergence.

"Functional ultrasound through the skull" (2025) https://news.ycombinator.com/item?id=42086408

"Neurosurgeon pioneers Alzheimer's, addiction treatments using ultrasound [video]" (2024) https://news.ycombinator.com/item?id=39556615



I've read an article about this in some German weekly paper when I was like 18?

Was hoping for this to come to fruition in a couple of year's time. But patience always wins, right?

I also remember reading about stationary ANC embedded in buildings at that time.

Unfortunately, the only magazine article from that time that I remember and that has become reality, is the one about identifying individuals in "anonymized" location traces, using very few data points.

Guess that's just the way things are...

The time I'm referencing are the late naughties.



Interference patterns. Cool stuff. Made me think of the 3brown1blue video on holograms... that one blew my mind but that's par for the course for 3b1b...


So cool. Is this basically like 2 inaudible waves coming together in an "overlap spot" to create an audible moment?


Yes.

Since they are ultrasound waves, they are inaudible for humans, but they may be audible for various animals and for ultrasound detecting devices.







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