The First One-way Acoustic Isolator Lets You Listen In Without Being Heard

'...they've built the first ever one-way acoustic device...'

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And all this time I thought people were crazy for yelling at the radio or tv.

I don't know. The announcer always says "We'll see you tomorrow". That's always spooked me out.

Dontcha just love the hyperbole in these articles? "Breaks a fundamental law of physics" and then, later in the article, "...radio-frequency circulators are old news." Yes they are - and they don't violate any physical laws *either.*

Whatever happened to good tech reporting?

Whatever happened to good tech reporting?

They figure it has to be sugar coated to get most folks to read it. Everything is a breakthrough that violates the laws of physics and baffles scientists.

Heck, they've had the Cone of Silence for decades now.

The whole thing is so simplistic it's laughable.

These people have obviously never heard of active noise cancellation.

Back in 1991 I helped develop active noise cancellation technology. The commercialization of DSP technology made it possible to sample and generate out of phase acoustic waves fast enough to cancel out sounds.

This "new" approach seems to me to be scatter shot, at best.