Engadget: Snapchat launches its first Lens that reacts to sound

Engadget: Snapchat launches its first Lens that reacts to sound . “Snapchat has quite a few intriguing Lenses you can play with, including its body-tracking ones that can follow you around and its majestic sky whale Lens that uses sky segmentation technology. Now, it has rolled out the first ever Lens that reacts not just to what it sees, but also to what it hears.”