Cylinder Measurement Method for Directivity Balloons

Bru M. Cylinder Measurement Method for Directivity Balloons. In: AES Convention 149. Audio Engineering Society; 2020. Paper 10400. Available from: https://aes.org/publications/elibrary-page/?id=20937

@inproceedings{Bru2020_20937,
  author = {Bru, Maxime},
  title = {{Cylinder Measurement Method for Directivity Balloons}},
  booktitle = {AES Convention 149},
  note = {Paper 10400},
  year = {2020},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20937}
}

TY  - CPAPER
TI  - Cylinder Measurement Method for Directivity Balloons
AU  - Bru, Maxime
T2  - AES Convention 149
M1  - Paper 10400
SP  - 1
PY  - 2020
DA  - 2020/10/06
UR  - https://aes.org/publications/elibrary-page/?id=20937
PB  - Audio Engineering Society
LA  - en
AB  - There are several ways to obtain the set of frequency responses all around a loudspeaker, the so-called directivity balloon which provides useful knowledge about the loudspeaker radiation behavior. In this paper, a novel method for collecting far-field directivity balloon datasets is presented. This alternative method builds on traditional polar measurements and proved to be practical both in terms of measurement time and equipment set-up. By cleverly combining datasets and by using far-field wave propagation, datasets in cylindrical coordinates are created and then projected on a sphere. Eventually, using a spherical interpolation, the directivity balloon is obtained.
ER  -