speaker

Divoom Bluetune-Bean is a Bluetooth Speaker That Doubles as a Wireless Shutter Release

As smartphone photography and selfie culture become more ubiquitous, we're starting to see new products that aim to make snapping smartphone shots simpler. First came the selfie stick, and now there's a new product called the Divoom Bluetune-Bean. It's an ultra-portable Bluetooth speaker that has a feature that sets it apart: on the side is a shutter button for triggering the camera on your phone.

What a DSLR’s Rolling Shutter Does to a Speaker Playing a 61Hz Tone

Here's another example of a strange effect caused by the shutter of a DSLR. YouTube user drummaboy5189 captured the above video by playing a 61Hz sound through his speaker and then pointing his Canon 6D at it while filming at 60 frames per second and 1/4000s shutter speed. What resulted is a "rolling speaker" effect.