This video examines the amount of location information carried by inaudible background sounds, using the Doppler effect to locate a reference recording within ~100m, and only needing (in some cases) less 1-min of audio. This video raises awareness of these capabilities and closes by discussing preventative measures one could take.

This is an incredible video. I recommend you watch until the end.

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Pretty cool watch. Probably old news by now on any serious scale though.

He basically isolated some low frequencies (which means they penetrate materials well) of plane engines and calculated based on a few of them a precise location where the video was taken.

 

cross-posted from: https://sopuli.xyz/post/54147499

Pretty cool watch. Probably old news by now on any serious scale though.

He basically isolated some low frequencies (which means they penetrate materials well) of plane engines and calculated based on a few of them a precise location where the video was taken.