Binaural Hearing


 

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 Code Number :   3C10.20

Disclaimer:

Reprinted by permission of Dick Berg, University of Maryland, for use on this website.

The demonstrations contained and referenced herein are listed for the purposes of cataloging and describing physics demonstrations which should be conducted only under the direction of a trained instructional support professional or physicist. These demonstrations are not presented for the purpose of being conducted by persons unconnected to this Facility and/or persons not consulting with or being supervised by the recognized instructional support professional or physicist and his/her staff. The University is responsible only for those demonstrations carried out using its own equipment using established safety and scheduling policies, and bears no responsibility for those choosing to use this source material for their own purposes. All demonstrations described and contained herein are public domain, and can also be found in reference materials in libraries, bookstores, and electronic sources.

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Condition :   Excellent  
Principle :   Hearing resolution,  
Area of Study :  Acoustics  
Equipment :   Flexible plastic tubing with the center marked, small wooden dowel rod.  
Procedure :   Hold the ends of the flexible tubing so that each end of the tube goes against an ear.  Have someone tap on the tube in different positions. See how close to the middle of the tube you can come before you can no longer distinguish the time differential.
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   References
 

Thomas D. Rossing, "Localizing Sound Underwater", TPT, Vol. 23, # 7, Oct. 1985, p. 430 - 431.

Morris G. Hults, "Binaural Hearing", TPT, Vol. 18, # 7, Oct. 1980, p. 509.

 

W- 035:  "Time Resolution of Ear,"  DICK and RAE Physics Demo Notebook.

 

Raymond Bruman, "Stereo Hearing," Exploratorium Cookbook I, p. 69.1 - 69.2.

"Stereo Sound," Science Snackbook, p. 94.1 - 94.2.

"Hearing Test,"  PIRA Newsletter, Vol. 3, No. 17 (Jan 1990).

Brown, Science for You - 112 Illustrated Experiments, p. 39.

"Perception of Direction with Sounds," Physics From the Junk Drawer, 3rd Edition, The Science House, North Carolina State University, p. 46.


Mail Questions and Comments to:  Dale Stille