This post was originally published at bobbyowsinskiblog.com
Imagine that you’re making a video of an important speech or interview and your audio fails. You’re left with this beautiful picture, and no sound to go along with it (unless you’re running a backup recorder like you should!). New research from MIT has found that many everyday objects can actually act as recorders, and that sound can be extracted from them after the fact.
All this is done via high-speed video, where an algorithm analyzes the minute movements of an object then extracts the audio from that.