Speech-jamming gun

Are there any instructables available when it comes to "Speech-jamming guns"?

Like this:

http://www.technologyreview.com/blog/arxiv/27620/

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gen.badger5 years ago
It would be easy, in theory. The problem with a PA horn is that is scatters the sound. Notice the box shape of the actual device. I assume that it is a directional speaker and the spread is minimal. It is designed to bounce back the sound at the target, while others around them won't hear it. What you need is a directional mic, directional speaker, amplifier, micro controller to delay the sound, and a box to put it in. As for the micro controller, perhaps arduino can suffice.
caitlinsdad5 years ago
The effect on the person speaking is when you get confused by an echo or some annoying person repeating everything you say real quickly. Celebrities that sing the national anthem in a stadium are messed up by it all the time when they hear the delayed voice going through the stadium public address system.

Just search on voice delay or modding karaoke units with echo function. I suppose you could have a mike input into a PA horn with a delay to bounce the voice back.
I'm not inputting anything into a PA horn
Lol, did you login to the wrong account or something?
Caitlinsdad wrote: I suppose you could have a mike input into a PA horn with a delay to bounce the voice back.

Since I am Mike (technically the term for a microphone is a mic) I just wanted it clear that he didn't mean me :-p