Transfer sound using light
Why use Wi-Fi when you can transmit an audio signal using a laser pointer or LED? 
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4 Posted 646 days ago by DarkiKun
Why do ppl have to post just to say its worthless? that's just retarded.
its an interesting experience and its not made to be useful.
5 Posted 646 days ago by MrGood
i think if it can only work with a line of site and he only has it 5 meters away. I think its cheaper to buy a 5 meter 3.5mm jack male to male cable. Rather than getting 5 croc cables, a resistor, laser pointer and 2x 3.5mm plugs.......
8 Posted 646 days ago by SixaxisDualshock
I get the point of this, but [url=http://www.hak5.org/]Hak5[/url] did this like over a year ago or something.
11 Posted 646 days ago by keyshey
really awesome!
i wonder if theyre using this technology w/ any consumer products now
nice!
12 Posted 646 days ago by joeherper
You could set up a wireless network with infra-red light that would not have free riders. This is a very basic application of what is a promising way to send information with a degree of broadcast control.
16 Posted 645 days ago by jwn
Very cool. He's modulating the audio signal in the visual spectrum. Forget gigahertz, this guy is working at 500 terrahertz.
17 Posted 645 days ago by jOzzie
Made this one years ago for Physics. It's nice to make it yourself but not very usefull
But I read that it should also be possible to hear people talk in another room when pointing the laser at a window and catching the reflecting bundle... because when someone is talking there it should make the glass tremble a little bit 
unfortunately I hadn't time to try it... 
20 Posted 644 days ago by lacroupade
hey that should work really great on the train on the way to work....
21 Posted 644 days ago by rdsgalvao
Nothing new about this. I've been using optical wireless headphones for over a year.
In case you don't know you can buy them almost anywhere, the only difference is that they work with a UV LED, so that as to reduce interference from other light sources.
22 Posted 624 days ago by killest
Sony released a TV that had Wireless Infrared Headphones Way back in the early 90s
It's really cool stuff
23 Posted 620 days ago by nooitaf (moderator)
this gets very interesting at the prices you have to pay nowadays for very strong lasers.. the simplicity is just amazing! with 8 lasers you could actually transit dolby7.1 .. woow 
.. and even if you could buy a cable thats cheaper .. a laserbeam just looks awsome compared to any cable out there!
Go Laser, go laser !
(20 votes)
1 Comment rating too low, click to show Posted 647 days ago by BigBang
Uhm yeah... place the laser on a table in 3m distance to the opto transistor, adjust it, kick the table, and adjust it again... and again... every single time a part moves like 2cm.