Modal Impedances and the Boundary Element Method: An Application to Horns and Ducts

Kolbrek B. Modal Impedances and the Boundary Element Method: An Application to Horns and Ducts. In: AES Convention 139. Audio Engineering Society; 2015.pp. 9369:1-. Available from: https://aes.org/publications/elibrary-page/?id=17927

@inproceedings{Kolbrek2015_17927,
  author = {Kolbrek, Bjørn},
  title = {{Modal Impedances and the Boundary Element Method: An Application to Horns and Ducts}},
  booktitle = {AES Convention 139},
  pages = {9369:1-},
  year = {2015},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17927}
}

TY  - CPAPER
TI  - Modal Impedances and the Boundary Element Method: An Application to Horns and Ducts
AU  - Kolbrek, Bjørn
T2  - AES Convention 139
SP  - 1
M1  - Paper 9369
PY  - 2015
DA  - 2015/10/06
UR  - https://aes.org/publications/elibrary-page/?id=17927
PB  - Audio Engineering Society
LA  - en
AB  - Loudspeaker horns, waveguides, and other ducts can be simulated by general numerical methods, like the Finite Element or Boundary Element Methods (FEM or BEM), or by a method using a modal description of the sound field, called the Mode Matching Method (MMM). BEM and FEM can describe a general geometry but are often computationally expensive. MMM, on the other hand, is fast, easily scalable, requires no mesh generation and little memory but can only be applied to a limited set of geometries. This paper shows how BEM and MMM can be combined in order to efficiently simulate horns where part of the horn must be described by a general meshed geometry. Both BEM-MMM and MMM-BEM couplings are described, and examples given.
ER  -