@TechReport{	  it:2006-042,
  author	= {Eddie Wadbro},
  title		= {On the Far-Field Properties of an Acoustic Horn},
  institution	= {Department of Information Technology, Uppsala University},
  department	= {Division of Scientific Computing},
  year		= {2006},
  number	= {2006-042},
  month		= sep,
  abstract	= {This report presents a derivation of an expression for
		  time harmonic acoustic wave propagation in the far field
		  for two and three space dimensions, and includes detailed
		  descriptions of the numerical evaluation of the far-field
		  pattern in some typical situations. The presentation covers
		  all parts required for computing the far-field properties
		  of acoustical devices, and the report is designed to
		  function as a single reference for these computations.}
}