There was a 2014 SIGGRAPH submission called "The Visual Microphone" [1]; it is also discussed in the 'research highlights'section of the Communications of the A

There was a 2014 SIGGRAPH submission called "The Visual Microphone" [1]; it is also discussed in the 'research highlights'section of the Communications of the ACM [2]. [1]: https://people.csail.mit.edu/mrub/VisualMic/ https://people.csail.mit.edu/mrub/VisualMic/ [2]: https://cacm.acm.org/magazines/2017/1/211095-eulerian-video-magnification-and-analysis/fulltext https://cacm.acm.org/magazines/2017/1/211095-eulerian-video-...