audio spotlighting full report

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Audio Spotlight
■ Audio spot lighting is a recent technology that creates focused beams of sound similar to light beams coming out of a flashlight.
■ Focus sound beam can be targeted to one location and specific listeners without hearing nearby people.
■ Audio spotlight is invented by Joseph Pompei founder of Holosonics research lab and student of MIT
Technology
• Audio spotlight uses ultrasonic energy to create extremely narrow beams of sound that behave like beams of light.
• When inaudible ultrasound pulses are fired into the air, it spontaneously converts the inaudible ultrasound into audible sound tones.
• Audio spotlighting
NON-LINEARITY OF AIR
• Non-linearity of the air works as a de-modulator
• Non-linearity of the air to create audible by-products from inaudible ultrasound,
DIRECT AUDIO AND PROJECTED AUDIO
It can direct sound at a specific target, creating a contained area of listening space which is called "Direct Audio".
It can bounce off of a second object, creating an audio image. which is called "projected Audio".