Simulation of the IEC 60711 Occluded Ear Simulator

Nielsen L, Schuhmacher A, Liu B, Jonsson S. Simulation of the IEC 60711 Occluded Ear Simulator. In: AES Convention 116. Audio Engineering Society; 2004. Paper 6162. Available from: https://aes.org/publications/elibrary-page/?id=12629

@inproceedings{Nielsen2004_12629,
  author = {Nielsen, Lars and Schuhmacher, Andreas and Liu, Bin and Jonsson, Soren},
  title = {{Simulation of the IEC 60711 Occluded Ear Simulator}},
  booktitle = {AES Convention 116},
  note = {Paper 6162},
  year = {2004},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=12629}
}

TY  - CPAPER
TI  - Simulation of the IEC 60711 Occluded Ear Simulator
AU  - Nielsen, Lars
AU  - Schuhmacher, Andreas
AU  - Liu, Bin
AU  - Jonsson, Soren
T2  - AES Convention 116
M1  - Paper 6162
PY  - 2004
DA  - 2004/05/06
UR  - https://aes.org/publications/elibrary-page/?id=12629
PB  - Audio Engineering Society
LA  - en
AB  - Ear simulators are standardized devices used for calibration of e.g. earphones and telecommunication equipment. In this paper, the ear simulator B&K Type 4157 is investigated using a combined boundary/finite element model (BEM/FEM) of the air inside. Traditionally lumped parameter models have been used to create an electrical equivalent diagram for simulating acoustic impedances. However, these lumped parameter models have some built-in limitations and may not be valid for higher frequencies where the acoustic wavelength is in the range of the ear simulator dimensions. A more accurate acoustic model can be derived using well-established techniques like BEM and FEM. Here we present a combined BEM/FEM model, taking into account the thermo-viscous effects, which are shown to be required for obtaining realistic results. Comparisons between simulation and measurement are given.
ER  -