directed sound


directed sound
(di.REK.tud sownd, dy-)
n.
Sound waves aimed and focused so they can only be heard by a person or persons within a specific area.
Example Citations:
In a potentially revolutionary development, at least two separate and very different companies have already turned the concept of directed sound into reality.
Speakers work basically by physically creating waves in the air, using a membrane or other mechanism to pump the vibrations out, which means they disperse in an ever-wider arc. In contrast, Holosonic Research Labs Inc. and American Technology Corp. disrupt the air with ultrasonic waves at about 100,000 hertz, a frequency not even dogs can hear.
This enables the companies to transmit a highly focused sound somewhat like how a flashlight beams a focused light. A person can speak in a normal voice and be heard privately up to 600 yards away — yet anyone more than a couple of feet to either side of the intended listener won't hear a thing.
— Chris Marlowe, "Sound technology — for your ears only," The Hollywood Reporter, July 23, 2003
Imagine standing in the frozen-food aisle of your supermarket, staring at a tub of your favorite double-fudge brownie ice cream. Suddenly, a voice comes out of nowhere to tell you there's a two-for-one sale on that very treat. But only you hear the message. In fact, the guy studying the cookie-dough choices 2 feet away is listening to a different ad — which you can't hear. ...
[S]o-called directed sound may soon be accosting consumers in all kinds of real-life settings. A small San Diego company, American Technology Corp. (ATC), has already begun shipping a product called the HyperSonic Sound system [HSS], which uses inaudible ultrasonic waves to create vibrant sound out of thin air.
— Arlene Weintraub, "Here you hear it, there you don't," Business Week, February 17, 2003
Earliest Citation:
We are focused on achieving high volume applications featuring the unique benefits of HSS directed sound.
— "To the Shareholders of American Technology Corp." Business Wire, March 25, 2002
Also:
Implanting computer chips into the brains of chimpanzees and using the animals as expendable pilot crews, genetically re-engineering future pilots to be a "better" pilot, ... developing tiny robots to be used for sabotage — such are problems with which the U.S. airforce research is dealing.
It became known to the newspaper "Mercury News" that the above-mentioned "promising ideas" alongside hundreds of others were discussed at an air force "brainstorming" conference held at Dayton, Ohio, in 1985. ...
[O]ne of the proposals that was highly assessed by airforce representatives and recognised as deserving to be developed envisages creating generators of long-range directed sound beams which could cause panic among enemy forces.
— Vladislav Orlov, "Militaristic projects of American futurists," TASS, February 10, 1987
Notes:
When the inventors of directed sound (which is also called point-focused sound, focused sound, and sound beams) talk up their product, they usually trot out various innocent-sounding scenarios. For example, Mom and Dad listen to their music in the front of the minivan while the kids listen to their music in the back, without disturbing each other's listening pleasure. Similarly, a husband watches late-night TV in bed while his sleeping wife hears nothing.
However, when pressed for further examples these inventors don't take long to get around to the marketing possibilities, which generally include standing in front of a product at the supermarket and immediately hearing an ad for that product. See example citation \#2 for more on this new marketing low that's both creepy and alarmingly Minority Reportish.
Related Words: Categories:

New words. 2013.

Look at other dictionaries:

  • Sound localization — refers to a listener s ability to identify the location or origin of a detected sound in direction and distance. It may also refer to the methods in acoustical engineering to simulate the placement of an auditory cue in a virtual 3D space (see… …   Wikipedia

  • Sound and Beauty — is the omnibus title of two plays by American playwright David Henry Hwang. Hwang s fourth play, The House of Sleeping Beauties , was adapted from Yasunari Kawabata s novella House of the Sleeping Beauties . It tells the story of the narrator of… …   Wikipedia

  • Sound barrier (disambiguation) — Sound barrier may refer to:wqdnakldabzczncalkejfAS sjasbda *Sound barrier, the transition at transonic speeds from subsonic to supersonic travel, usually referring to flight. * The Sound Barrier , a British 1952 film directed by David Lean.… …   Wikipedia

  • Sound of Hope — (Zh tspw|t=希望之聲,|s=希望之声,|p=Xīwàng Zhīshēng,|w=Hsi wang Chi sheng) is an independent non profit news and entertainment broadcast service linked with Falun Gong. It originated in Mandarin, and currently offers programs in Chinese, English, French,… …   Wikipedia

  • Sound Fuzion — is a touring ensemble of nine vocalists and five instrumentalists, which represents the University of Memphis at public school concerts, corporate functions, University sponsored activities in addition to performing as part of the Rudi E. Scheidt …   Wikipedia

  • Sound of a Voice — is a 2002 short film based upon the play The Sound of a Voice by American playwright David Henry Hwang. Susan Hoffman directed the film while participating in the American Film Institute s Directing Workshop for Women 2002. The screenplay… …   Wikipedia

  • Sound ranger — Sound RangerSound Rangers locate enemy artillery using equipment such as super sensitivemicrophones that can pick up the sound of firing to pinpoint enemy positions, so that the location could be pinpointed by surveying techniques and… …   Wikipedia

  • Sound 360 — was the name of a motion picture sound system used by 20th Century Fox to enhance the premiere engagements of their 1977 feature Damnation Alley .The format employed the standard 35mm magnetic stereo soundtracks (left, center, right and surround) …   Wikipedia

  • Sound film — …   Wikipedia

  • Directed-energy weapon — This article is about practical experiments with energy weapons. For fictional uses, see raygun. Humvee with Active Denial System mounted A directed energy weapon (DEW) emits energy in an aimed direction without the means of a projectile. It… …   Wikipedia