Posted by Wayne Parham [ 64.216.177.70 ] on May 02, 2004 at 05:20:14:

I always liked the idea of this technology. It uses hetrodyning of ultrasonic sound to produce an audible artifact, which is what is heard. Check it out.

• Hypersonic Sound

Replies:

• Re: Hypersonic sound transducer - Crystal 20:00:14 10/13/07 (0)