Watch a Pre-January 8th copy of Inception. Listen closely when the actors say imagine, reality, and safe, or point pistols. You'll hear the words, Loughner, offin' her, part of the word Giffords, and much more. Some say they hear, do it.
Wow this is pretty cool. Is this how CD ROMS work? Would it be possible to modify a record player to use a laser instead of a needle? shit, makes me wonder if you could make a knock sensor with a laser. Head explodes with ideas lol
There are ridiculously easier and simpler ways to do this. Some guy on metacafe built one with a laser pointer, headphone cord, laptop and some cheap 30 cent thing from radio shack.
good job, dont listen to these 10 year olds that think they know what they're talking about, some of these comments say something about vibration,, this has nothing to do with vibration
Φίλε πολύ ωραία και ενδιαφέρουσα η πατέντα σου. Μπορείς να μου πεις σε ποιό φαινόμενο της φυσικής έχεις πατήσει, για να διαμορφωθεί σήμα πάνω στην ακτίνα μέσω δόνησης;
Government units such as used by the CIA, etc, use a watt or two of power, no matter what you hear. Some SWAT units use 20mw versions of these.
If you want to really get with the program, time of your life and all that, then forget lasers entirely and concentrate on microwave listeners. They do not need a window and can go through any solid surface and bounce directly off your intended target audio.
These units use what is called an interferometer which is a fancy term for a beam splitter. The devices split the beam in two and then recombine it to detect displacements or vibrations using phase demodulation.
Some older police radar guns will also let you do this to various degrees. Prison escape teams have used these for decades to listen for inmates hiding in wooded areas, corn fields, etc.
Basically, state of the art microwave listening devices have s/n ratios on the order of 120db and can detectect a human heartbeat of a person standing in back of a 747 jumbo jet running at full power. They are adapted and refined versions of non contact vibration sensors used by industry since the 1960's. They are a few inches by a few inches in size and have a range out to about 50 yards.
Any police department can get one for a couple of grand. You can make your own short range version using a gunnplexer (Ebay) and a good audio amp.
Large government installations grounds and surrounding areas are monitored by huge versions of these devices that utilize a large dish, and several thousand watts for a range on the order of 10 miles, or if used at shorter ranges can detect audio through 6 feet of concrete. No lie. Hope this helps.
My question is what the results would be if the laser microphone were coupled with an accurate method of distance measurement such as a Michelson Inferometer in order to detect micron variations in the distance to the window. Provided the microphone were on a stabile platform, the resulting signal would have to be amplified far less. Please someone with electronics or optics experience reply back or PM me. I am interested in making such a device.
I've achieved the same results with a photocell plugged into a laptop's microphone jack and a small laser pointer... lots of noise and software amplification though.
this wont work rpactically nearly as well as you think though. the idea is sound but it has one potential downfall.
double glazed windows won't allow this to work as the outer pane will reflect all the light back to the laser but the inner pane will be the only one vibrating.
It depends to the optical power of the laser. For example if I use a 80mW red laser module then there will be a reflection to the outer window an the laser bean will lose some of its power, but it will continue and reflect to the inner window. So the returned beam through glasses again regarding Snell's law will "bring the information". But the iidea of the circuit is again the same. It doesn't matter, it just needs as i said at the beginning more power...
Πολύ καλή δουλειά. Ωραίο Project!
eNeRGySers 9 months ago
Huh.....?
BlatendCrude 9 months ago
This has been flagged as spam show
Watch a Pre-January 8th copy of Inception. Listen closely when the actors say imagine, reality, and safe, or point pistols. You'll hear the words, Loughner, offin' her, part of the word Giffords, and much more. Some say they hear, do it.
jamestargetedindiv 10 months ago
Wow this is pretty cool. Is this how CD ROMS work? Would it be possible to modify a record player to use a laser instead of a needle? shit, makes me wonder if you could make a knock sensor with a laser. Head explodes with ideas lol
intheshitter 1 year ago
This is double paned, sound-
proofed glass. There's no way
this neighbor could have heard
Podacter scream on the way down
with this door shut.
BackyardAmusement 1 year ago
@BackyardAmusement finkle is einhorn.
hefonthefjords 7 months ago
M1thotyn is right....
360GEO360 u must have to watch the video on metacafe.
& the 30cent thing is photocell.
TANGYTONY 1 year ago
There are ridiculously easier and simpler ways to do this. Some guy on metacafe built one with a laser pointer, headphone cord, laptop and some cheap 30 cent thing from radio shack.
M1thotyn 1 year ago
good job, dont listen to these 10 year olds that think they know what they're talking about, some of these comments say something about vibration,, this has nothing to do with vibration
dodgedart74 1 year ago
Comment removed
beou1980 1 year ago
yawn.....
agrajag46 1 year ago
Φίλε πολύ ωραία και ενδιαφέρουσα η πατέντα σου. Μπορείς να μου πεις σε ποιό φαινόμενο της φυσικής έχεις πατήσει, για να διαμορφωθεί σήμα πάνω στην ακτίνα μέσω δόνησης;
PIESISSYSTEMS 1 year ago
AFP combat the problem by using a sensitive liquid on the inside of a room
Internettroll1 1 year ago
xalkos 20 x30 :-P se piasa ! shnexeise filos poli kalo videaki
playfsx 1 year ago
Government units such as used by the CIA, etc, use a watt or two of power, no matter what you hear. Some SWAT units use 20mw versions of these.
If you want to really get with the program, time of your life and all that, then forget lasers entirely and concentrate on microwave listeners. They do not need a window and can go through any solid surface and bounce directly off your intended target audio.
Suninyourhands 2 years ago
These units use what is called an interferometer which is a fancy term for a beam splitter. The devices split the beam in two and then recombine it to detect displacements or vibrations using phase demodulation.
Some older police radar guns will also let you do this to various degrees. Prison escape teams have used these for decades to listen for inmates hiding in wooded areas, corn fields, etc.
Suninyourhands 2 years ago
This has been flagged as spam show
Basically, state of the art microwave listening devices have s/n ratios on the order of 120db and can detectect a human heartbeat of a person standing in back of a 747 jumbo jet running at full power. They are adapted and refined versions of non contact vibration sensors used by industry since the 1960's. They are a few inches by a few inches in size and have a range out to about 50 yards.
Suninyourhands 2 years ago
Comment removed
Suninyourhands 2 years ago
Comment removed
Suninyourhands 2 years ago
Any police department can get one for a couple of grand. You can make your own short range version using a gunnplexer (Ebay) and a good audio amp.
Large government installations grounds and surrounding areas are monitored by huge versions of these devices that utilize a large dish, and several thousand watts for a range on the order of 10 miles, or if used at shorter ranges can detect audio through 6 feet of concrete. No lie. Hope this helps.
Suninyourhands 2 years ago
My question is what the results would be if the laser microphone were coupled with an accurate method of distance measurement such as a Michelson Inferometer in order to detect micron variations in the distance to the window. Provided the microphone were on a stabile platform, the resulting signal would have to be amplified far less. Please someone with electronics or optics experience reply back or PM me. I am interested in making such a device.
erjohnson227 2 years ago
I've achieved the same results with a photocell plugged into a laptop's microphone jack and a small laser pointer... lots of noise and software amplification though.
igoronline 2 years ago
this wont work rpactically nearly as well as you think though. the idea is sound but it has one potential downfall.
double glazed windows won't allow this to work as the outer pane will reflect all the light back to the laser but the inner pane will be the only one vibrating.
hefonthefjords 2 years ago
It depends to the optical power of the laser. For example if I use a 80mW red laser module then there will be a reflection to the outer window an the laser bean will lose some of its power, but it will continue and reflect to the inner window. So the returned beam through glasses again regarding Snell's law will "bring the information". But the iidea of the circuit is again the same. It doesn't matter, it just needs as i said at the beginning more power...
360GEO360 2 years ago
@hefonthefjords Actually on professional models you can focus beam on inner glass or even on object inside the room...
radovanovicv 7 months ago
@radovanovicv this would be totally amazing and probably hilarious to play with.
hefonthefjords 7 months ago
@hefonthefjords lol not to mention illegal :))
MrLucianno95 7 months ago
Amazing job!
thepcdude 2 years ago
how can i got such schematic diagram ?
te11u1ater 2 years ago
good job man
mattian2 3 years ago
whats the name of this song, it rocks ! :D
jonycastle84 3 years ago
Dream On Black Girl (Radio Edit) - Kash vs INXS
Yes it is a great hit
360GEO360 3 years ago
re megale nomizeis oti auto epai3ai?
mczedalex1 3 years ago
kai epaikse kai paizei!
360GEO360 3 years ago
gamate keep going! na rwtisw enas sxedon asxetos borei na to kanei afto??
battlefieldpanos 3 years ago
thanx! tha paideutei sthn arxh polu.Oreksi na exei kai kati ginetai pisteuw.
360GEO360 3 years ago
DSP Lab Dr.Syrkos etc ;)
autokrikri 3 years ago
Kalutero?????:)
360GEO360 3 years ago
...bale kai kanena title
Technological Institute of Piraeus Automation Department na kanoume kai mouri ;)
autokrikri 3 years ago
filraki to exw dei sto TEI peiraia auto h' mou fainetai??? ptuxiakh den einai auto?
penteli08 3 years ago
nai ptixiaki einai,sto erg pse to eides.
automation for ever :)
ithinkofnothing 3 years ago