Re: OT: LRAD new sonic technology

[Suit & Tie Guy <erwill@suitandtieguy.com>]

On Aug 27, 2004, at 12:16 PM, Nicholas Shortway wrote:
> It's actually a very different idea than  the Nazi's weapon.  
> Hypersonic Sound utilizes ultrasonic sound waves to "encode" an 
> incoming sound signal so that it can be reproduced directly in front 
> of the listener.  It relies on the "non-linearity principle" of air to 
> cause collisions of ultrasonic sound waves to produce sum and 
> difference frequencies of the colliding waves.  Obviously the sum of 
> ultrasonic waves will not even be close to audible frequencies, but 
> the difference waves will be audible and will

ah, thank you for the clarification. i did not RTFA well enough.

funny .. i thought we were going to get awesome PA speakers out of this 
technology, not weapons.

---
Eric Williamson
www.suitandtieguy.com