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Historical Perspectives

Abstract

To be able to “see” with sound has long been an intriguing concept. Sound waves which are scattered from objects carry much the same image information as do scattered light waves. However, humans are not naturally equipped to efficiently data-process the acoustic image information. A person cannot obtain a good mental image of an object by simply listening to the scattered sound from the object. For example, a man cannot go into a completely dark room and by using his vocal chords only, obtain much information, if any at all, that will give him a mental image of the objects in the room. He may shout and listen for echoes, but to almost no avail. On the other hand, he can do precisely the equivalent thing with light. If he takes a flashlight into the room, he can quickly turn it on and off, creating flashes of light. By seeing the pulses of scattered light from the various objects he can readily obtain a mental image of the size, color and configuration of the various parts of the room and of the objects placed within it.

Keywords

Sound Source Image Information Reference Beam Acoustic Imaging Object Beam 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1976

Authors and Affiliations

  • G. Wade
    • 1
  1. 1.Electrical Engineering DepartmentUniversity of California at Santa BarbaraUSA

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