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More Great Links

• Holosonics.com

Sources

• Abelson, Jenn. "The marketers have your ear." Boston Globe. April 24, 2007. (July 21, 2008)
  http://www.boston.com/business/globe/articles/2007/04/24/the_marketers_have_your_ear/?page=1
• Rienstra, Allan and James Hall. "Ultrasonic detection." SDT North America. (July 21, 2008)
  http://www.sdtnorthamerica.com/PDFs/avmlfp.pdf
• Holosonics.com. 2002. (July 21, 2008)
  http://www.holosonics.com/technology.html
• U.S. Patent 7130430 -- Phased array sound system. PatentStorm.com. Issued Oct. 31, 2006. (July 24, 2008)
  http://www.patentstorm.us/patents/7130430/description.html