L.R.M.V.D.

[singularity]

okay i had this idea (well it came from a game i played, Splinter Cell) a Long Range Minute Vibration Detector (LRMVD for short, i just made that up so i dont have to type it out) heres the idea... glass vibrates when sound is introduced so i was thinking if you could dectect those vibrations you translate them back into sound. so if i were to point a laser at glass some of it would bounce back, if i could detect the reflection (with a phototransistor) i could translate it back into sound, right? or is this just a tremendous waste of time and it will never work? hter is no real reason for this project im just kinda bord...

[MrCrowley]

Do you mean like an echo?Like if you hook up a sound thing to some glass and someone/something makes a noise you can hear it through earphones attached to the glass.
Not sure why you want to do this but spose its your life

[saladtossser]

http://www.amazing1.com/laser-listener.htm

bubble burst!

[singularity]

well that where the game got the idea... but im not gonna pay $100 for it, here i got a schematic <img src="http://img.engadget.com/common/images/3 ... 4075586857">