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A comment on We need to talk about AirPods Pro. Parent comment

Re:We need to talk about AirPods Pro by andreareina on Friday April 10, 2020 @06:03PM (#22837778)
ANC works on the level of physics, not just perception -- it attenuates the actual sound waves.
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Re:We need to talk about AirPods Pro by novok on Friday April 10, 2020 @06:46PM (#22838140)
Where does that energy go although? The waves go to 0-ish, but that air pressure / energy has to go somewhere correct?
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Re:We need to talk about AirPods Pro by andreareina on Saturday April 11, 2020 @12:22PM (#22842448)
The energy goes into constructive interference in other parts of the wave (hopefully not traveling into your ear). Avery's beamlab[1] provides a nice playground with visual representation (use the anti-optimize mode). It's built around radio signals but the concept is very much the same.

[1] https://apenwarr.ca/beamlab/

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