Acoustic Waveguide Theory Revisited

Geddes ER. Acoustic Waveguide Theory Revisited. J Audio Eng Soc. 1993;41(6):452-461. Available from: https://aes.org/publications/elibrary-page/?id=6998

@article{Geddes1993_6998,
  author = {Geddes, Earl R.},
  title = {{Acoustic Waveguide Theory Revisited}},
  journal = {Journal of the Audio Engineering Society},
  volume = {41},
  number = {6},
  pages = {452--461},
  year = {1993},
  month = jun,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=6998}
}

TY  - JOUR
TI  - Acoustic Waveguide Theory Revisited
AU  - Geddes, Earl R.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 41
IS  - 6
SP  - 452
EP  - 461
PY  - 1993
DA  - 1993/06/06
UR  - https://aes.org/publications/elibrary-page/?id=6998
PB  - Audio Engineering Society
LA  - en
AB  - The concept of waveguides was introduced by Geddes in 1989. That paper showed how Webster's horn equation lacked a sufficient description of the wave propagation in the horn to be accurate in directivity simulations. The concept of a waveguide as a direct solution to the wave equation was shown to be capable of exact solution, free of plane-wave assumption of Webster's equation. The original paper did not perform a complete calculation of the exact solution and in fact contained errors which have been of concern to some readers. The purpose of the present paper is to revisit the waveguide discussion and to proceed with an exact calculation of the wave propagation in an oblate spheroidal waveguide. These calculations will clear up the questions raised regarding the original paper as well as showing some new results.
ER  -