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For example:-A 16 inch loud speaker panel at 1 khz mounted six feet overhead, two people would have to stand seven feet apart for 20db isolation where as ultra sonic technique provides same degree of isolation standing at merely 2 feet apart.
BLOCK DIAGRAM
IMAGES
APPLICATIONS
Museums and galleries-It provides localised sound for those who wish to hear it and quiet for every one else. Chicago cultural center, Boston museum of science, San Diego zoo, museum of South Australia.
Retail shops:-Provide targeted advertising at the point of purchase.
Public announcement:-Highly focused announcement in noisy environment such as airports, traffic intersections,s ubways.
Entertainment System:-Home theatre systems will soon be seen with this technology.
Automobiles:-Beam alert signals can be directly from an announcement device in the dashboard to the driver.
Consumer locations:-Hair sallons and music stores to pamper the customers.
CONCLUSION
Force the people to rethink their relationship with sound.
It “puts the sound where you want”.
“A REAL BOON TO THE FUTURE