audio from what I can see?

[stuffedpanda]

How do I record this?

My bedroom window of my apartment looks directly out into a converted hotel building across a really narrow street. At first there was not anything worth looking at and then one night I woke up around 3am and look out the window to see one light on across the street and a very blurry shape moving up and down repeatedly.
I'm thinking it can't be, so I rub my eyes and look closer and it's a girl riding on a guy in bed They do that for a while and then he takes her from behind for a few minutes and they finish off.
The next night they are watching a movie and around the same time they start up again. They take off each others clothes, make out, and then she spreads herself out on the bed and and the guy starts to go down on her.

So far they've had sex at least one a weekend for the past three weeks that I've noticed. How do I record this? Would a parabolic mic even work? Are there any audio transmitters or recorders that are extremely tiny and could be left in the hallway to be grabbed later?

[yeppie]

I'd say "no transmitters" - too risky legally and being detected.
What about your device from this thread?
If you can afford 15.000€ (or was it $?), a laser mic would do the job

[stuffedpanda]

Thanks yeppie Don't you have the same one? How did you deal with the blinking light on it when it's running? It's hard to cover up without covering up the microphone too. What would you put it inside?

[yeppie]

I bought two of these. I would not use it for covert recordings of course but assumed I would, I'd cover the light carefully with black electrical tape which works without covering the mic too. The placement depends upon the local circumstances, a boxed radiator is one possibility.

[sonar]

Or,
rent the room beside them in the hotel.
This is cheapest than the laser mic.

[mjj9994]

Shotgun Microphone. Good for 2-300 meters in optimal conditions, 100 meters or less in 'typical' conditions (cars driving by, other external environment noises). Parabolic mic would probably work as well, but have not tested any.

[sonar]

Shotgun Microphone. Good for 2-300 meters in optimal conditions, 100 meters or less in 'typical' conditions (cars driving by, other external environment noises). Parabolic mic would probably work as well, but have not tested any.

Yes, I think it too. But must directly insight to his or her mouth, because it's have very tight characteristics.

[fynen]

Why not experiment with a parabolic satellite dish? These dishes can often be picked up for free from the trash, 80 cm would be very powerful. On an offset parabolic dish if it is standing vertically the focus will be upwards at 45 degrees, so the easiest would be to turn the dish upside down and point the focus at the target and listen where the LNB electronics would be mounted. Might be a real pain to aim it, but with it mounted on a pipe and a heavy base it should work well. It could be zeroed in by mounting an aiming pipe on the dish so by sighting through the pipe you could quickly sight in.
The pipe could be zeroed in by finding a sound source to aim the dish at.

[stynky]

My initial thought was to use a laser microphone and replace the visible laser for an invisible laser (probably replacing the detector to match the new laser). But, someone at hack a day has come out with a better solution. A visible laser for aiming and a second for listening undercover. See link below

http://hackaday.com/2010/09/25/laser-mi ... ly-simple/

However, if you're up for a challenge, the GBPPR folks came up with a Gigahertz microphone. Quite impressive, but tough to build without the right equipment for troubleshooting. I wish they would sell a kit.

http://servv89pn0aj.sn.sourcedns.com/~g ... index.html