An experimental setup of the new system uses an off-the-shelf speaker to deliver an ultrasonic sound wave which is converted into power by a circuit board covered in microphones. The power yield is only about 10mW at a distance of about 20 inches, and that drops to just 1 mW at 16 feet, but it's enough to power low-energy electronics like LEDs. Don't forget, this is still experimental, so there's lots of room for the eventual improvement in the technology.
This technology can eventually be used as a new way to deliver wireless power to all sorts of devices, not just LEDs, from greater distances. But getting back to stage and concert lighting, imagine your whole lighting rig being powered by nothing but music!
----------------------------------Help support this blog. Any purchases made through our Amazon links help support this website with no cost to you.
You should follow me on Twitter for daily news and updates on production and the music business.
Don't forget to check out my Music 3.0 blog for tips and tricks on navigating social media and the new music business.