Caustic corrections using coherence theory

Shimshon Frankenthal*, M. J. Beran, A. M. Whitman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


In the vicinity of a caustic the intensity is very different from that calculated on the basis of geometrical acoustics. Using the basic formulation of coherence theory we show here how the correct intensity may be obtained when the source has a finite (i.e., nonzero) size. We use a two-scale expansion to include the correction term to the geometric acoustic calculation (here already modified to include the effect of a finite source). It is shown that in the limit of a point source the results are the same as those previously obtained. Finally a numerical example is presented.

Original languageEnglish
Pages (from-to)348-358
Number of pages11
JournalJournal of the Acoustical Society of America
Issue number2
StatePublished - Feb 1982


  • 43.20. Bi
  • 43.20. Dk
  • 43.30. Bp
  • PACS numbers


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