First Approach to Combine Particle Model Algorithms with Modal Analysis using FEM

Ahnert W, Bansal M, Feistel S. First Approach to Combine Particle Model Algorithms with Modal Analysis using FEM. In: AES Convention 118. Audio Engineering Society; 2005. Paper 6392. Available from: https://aes.org/publications/elibrary-page/?id=13108

@inproceedings{Ahnert2005_13108,
  author = {Ahnert, Wolfgang and Bansal, Mahesh and Feistel, Stefan},
  title = {{First Approach to Combine Particle Model Algorithms with Modal Analysis using FEM}},
  booktitle = {AES Convention 118},
  note = {Paper 6392},
  year = {2005},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13108}
}

TY  - CPAPER
TI  - First Approach to Combine Particle Model Algorithms with Modal Analysis using FEM
AU  - Ahnert, Wolfgang
AU  - Bansal, Mahesh
AU  - Feistel, Stefan
T2  - AES Convention 118
M1  - Paper 6392
PY  - 2005
DA  - 2005/05/06
UR  - https://aes.org/publications/elibrary-page/?id=13108
PB  - Audio Engineering Society
LA  - en
AB  - Geometrical approaches like ray tracing method and image source method are not sufficient in small and complex shaped rooms in order to take proper account of the wave nature of the sound field and to obtain room acoustic characteristics in higher quality in the low frequency bands. We present an overview of using the Finite Element Method (FEM) for performing modal analysis in closed environments and to show diffraction effects in EASE, the acoustic simulation software, which is not possible with existing particle models especially below the Schroeder frequency. For this purpose we consider the solution of the general quadratic eigenvalue problem arising from finite element analysis in enclosures with complex shapes and general impedance boundary condition. We are mainly concerned with the attempt of showing the practical feasibility of FEM in room acoustics and to combine it with the particle model in order to obtain the broad-band response of the room. Also, fundamental points regarding the Finite Element Method, iterative methods and required mesh quality are discussed.
ER  -