Comparison between Measurement and Boundary Element Modelization of Subwoofers

Melon M, Langrenne C, Thomas O, Garcia A. Comparison between Measurement and Boundary Element Modelization of Subwoofers. In: AES Convention 127. Audio Engineering Society; 2009. Paper 7845. Available from: https://aes.org/publications/elibrary-page/?id=15040

@inproceedings{Melon2009_15040,
  author = {Melon, Manuel and Langrenne, Christophe and Thomas, Olivier and Garcia, Alexandre},
  title = {{Comparison between Measurement and Boundary Element Modelization of Subwoofers}},
  booktitle = {AES Convention 127},
  note = {Paper 7845},
  year = {2009},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15040}
}

TY  - CPAPER
TI  - Comparison between Measurement and Boundary Element Modelization of Subwoofers
AU  - Melon, Manuel
AU  - Langrenne, Christophe
AU  - Thomas, Olivier
AU  - Garcia, Alexandre
T2  - AES Convention 127
M1  - Paper 7845
PY  - 2009
DA  - 2009/10/06
UR  - https://aes.org/publications/elibrary-page/?id=15040
PB  - Audio Engineering Society
LA  - en
AB  - At very low frequency, even large anechoic chambers can not be used to measure subwoofers accurately. A solution consists in using the Field Separation Method. This technique allows subtracting the field reflected by the measurement room walls to the measured field, thus recovering the acoustic pressure that would have been radiated under free field conditions. In this work, the Field Separation Method is used to measure two subwoofer prototypes. Results are compared to the ones given by a boundary element modelization of the subwoofers. Input velocities required for the modeling are measured by using a laser Doppler vibrometer. Comparisons are performed on the following quantities: on-axis pressure and directivity. Discrepancies between results obtained by these two methods are discussed and explained when possible.
ER  -