Approximation of the Struve function H1 occurring in impedance calculations

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Abstract

The problem of the rigid-piston radiator mounted in an infinite baffle has been studied widely for tutorial as well as for practical reasons. The resulting theory is commonly applied to model a loudspeaker in the audio-frequency range. A special function, the Struve function H1(z), occurs in the expressions for the rigid-piston radiator. This Struve function is not readily available in programs such as Matlab or Mathcad, nor in computer languages such as FORTRAN and C. Therefore a simple and effective approximation of H1(z) which is valid for all z is developed. Some examples of the application of the Struve function in acoustics are presented. © 2003 Acoustical Society of America.
Original languageEnglish
Pages (from-to)2635-2637
Number of pages3
JournalJournal of the Acoustical Society of America
Volume113
Issue number5
DOIs
Publication statusPublished - 2003

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