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ACTIVE CANCELLATION OF PRESSURE AT A POINT IN A PURE TONE DIFFRACTED DIFFUSE SOUND FIELD

โœ Scribed by J. Garcia-Bonito; S.J. Elliott; M. Bonilha


Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
440 KB
Volume
201
Category
Article
ISSN
0022-460X

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โœฆ Synopsis


In this paper the extension of the average zones of quiet produced in a diffuse acoustic field is studied when the acoustic pressure is cancelled at a point near a reflecting surface by using a remote secondary source. Analytical expressions for the extension of the zones of quiet generated when the cancellation point is close or on the surface of a rigid sphere, a wall, a two-wall edge and a corner have been derived. These theoretical results are compared with simulation results for the pressure in the vicinity of the cancellation point, and show good agreement.


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