HyperSonic Sound.™ A loudspeaker technology developed by American Technology Corporation. This design produces audio by mixing an ultrasonic carrier with audio sidebands, in much the same manner of heterodyning. The mixing takes place in the air, relying on the nonlinearity of the atmosphere. The resultant sound is actually not generated at the transducer, but all along a projected column of ultrasonically vibrated air in front of the transducer as a conversion by-product of the interaction of the ultrasonic waves. Inaudible ultrasound energy is projected, which in turn emerges as AF sound from adjacent reflective surfaces. An acoustical sound wave is created in the air molecules by down-converting ultrasonic energy into the AF. This process supposedly is free of the problems of conventional speaker voice coils, cones, crossover networks, or enclosures. In addition, because sound is generated along the entire length of the projected column, there is minimal (1dB) amplitude loss as a function of distance from the transducer, across an average-sized room.