Engineers studying ways to reduce engine noise need to know where the main sources of noise are located and what the effect on the sound field would be if part of the engine were damped. A technique called Spatial Transformation of Sound Fields (STSF), developed by Bruel & Kjaer to deal with these problems, is described. STSF is a powerful measurement and calculation technique that involves making acoustical measurements close to a noise source and then transforming this sound field data to any other position, both closer to and further away from the noise source under test.

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  • Accession Number: 00655739
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM