hypothetical

[JB88]

let's just say, for sake of argument, that i needed to project sound up to 100 feet from a source towards a target, and lets also say that i did not wish for the sound to be heard from anywhwere else but at the target point.

ideally i would be using high frequency sound projection, but i do not have access to such technology.  


is there a macguyver way to do  it?  

(one that is relatively compact)

[Neubob]

Use a cell phone.

[DREDIOCK]

A cheap Walkie Talkie will do it too

[JB88]

i am talking about non translated clean sound waves.

[Neubob]

Originally posted by JB88
i am talking about non translated clean sound waves.

Piss off your wife and stand 100 away.

[JB88]

(throws ball for neubob)

for instance, i went to a science museum once where they had a parabolic dish that you could whisper into and you could hear it across a courtyard.

the dish was huge though.  this needs to be small...and aimable.

[Neubob]

I don't know if you watch futureweapons on Discovery, but they showcased a new technology a few months back that generated coherent sound just like a laser does with light. Stand a few inches from the focal point, and you heard just a faint noise. Stand directly in its path and its deafening. You could also bounce the sound off surfaces, and it seemed to work at a pretty impressive range.

I'm assuming that this is the technology you don't have access to, as, I imagine, nobody does. Parabolic echo-dishes are then your best bet. Apparently, oriented correctly and given the proper amount of sound, you can actually cook meat with the focused sonic waves.

This rambling was the most help I could provide for your quest.

[JB88]

now were talking...

don't need to cook meat, just need to project sound loudly without disturbing surrounding area.

[john9001]

what did your neighbors do to make you mad at them?

[JB88]

well, if it were my neighbors it would be the extremely loud latino music pumping out of their umpteen cars for hours every day when they come home, even though i have asked them very nicely to keep it down a bit...(we live on a dirt road for cripes sakes...quiet neighborhood)

i just call the cops when i think they are getting out of hand and they scatter now, so it's not quite as bad.  

this is for the purposes of an art project.  it's an idea that i have been working on for years that i come around to every so often when i look through my sketchbooks.

great idea though.  might have to be an offshoot project.

[JB88]

when i say loud, i mean audible from a distance and/or amplified in such a way as to be heard.

the thing that bob was talking about was ideal, but i wouldnt have the slightest idea who even makes these things or how to find them.

i read an article once where they were starting to put them in vending machines.

[Thrawn]

Originally posted by Neubob
I don't know if you watch futureweapons on Discovery, but they showcased a new technology a few months back that generated coherent sound just like a laser does with light.

http://www.srs.gov/general/busiops/tech-transfer/techbrif/sono-beam.pdf

[JB88]

Originally posted by Thrawn
http://www.srs.gov/general/busiops/tech-transfer/techbrif/sono-beam.pdf

oh hell ya.

can anyone think of a way to macguyver something like this...(it doesnt have to be quite this precise...but it would be awesome if it was)

[storch]

is there a spyshops in your town?  http://www.spyshops.com  I have a device called supersonic ear try explore@wildplanet.com you can hear a gnat fart from one klic away

[Gunslinger]

Go to a swapp meet and see if you can pick up a cheap Sig. Gen.  Use the RF output and run that into any after market amplifier.  Then run that output to some speakers.  Anyone that will produce 10K Hz should do.  

That should be directional enough within the range of human hearing.....if human is infact your target.  I saw the disc.ch epp on future weapons and that flat pannel array was pretty darn cool.