Traditional speakers transmit non-directed sound at wavelengths of several feet. This new system, called Audio Spotlight, transmits millimeter-sized, ultrasonic waves in a very narrow beam of sound, which becomes audible as it travels through the air. Audio Spotlight, consists of two major components: a thin, circular transducer(speaker)array, and a signal processor/amplifier. The lightweight, nonmagnetic transducer is about .5 inches (1.0 centimeters) thick, and it typically has an active area 1 foot (30.48 cm) in diameter. It can project a three-degree wide beam of sound that is audible even at distances over 100 meters (328 feet). The signal processor/amplifier are integrated into a system about the size of a traditional audio amplifier, and they use about the same amount of power.

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