Vision Methods Applied to Measure the Displacement of Loudspeaker Membranes

Durand-Texte T, Melon M, Simonetto E, Durand S, Moulet MH. Vision Methods Applied to Measure the Displacement of Loudspeaker Membranes. In: AES Convention 144. Audio Engineering Society; 2018. Paper 9929. Available from: https://aes.org/publications/elibrary-page/?id=19446

@inproceedings{DurandTexte2018_19446,
  author = {Durand-Texte, Thomas and Melon, Manuel and Simonetto, Elisabeth and Durand, Stéphane and Moulet, Marie-Hélène},
  title = {{Vision Methods Applied to Measure the Displacement of Loudspeaker Membranes}},
  booktitle = {AES Convention 144},
  note = {Paper 9929},
  year = {2018},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=19446}
}

TY  - CPAPER
TI  - Vision Methods Applied to Measure the Displacement of Loudspeaker Membranes
AU  - Durand-Texte, Thomas
AU  - Melon, Manuel
AU  - Simonetto, Elisabeth
AU  - Durand, Stéphane
AU  - Moulet, Marie-Hélène
T2  - AES Convention 144
M1  - Paper 9929
PY  - 2018
DA  - 2018/05/06
UR  - https://aes.org/publications/elibrary-page/?id=19446
PB  - Audio Engineering Society
LA  - en
AB  - Increased interest has been witnessed over the past decades for techniques measuring the vibration of a loudspeaker membrane. In this proceeding, vision methods have been adapted to measure the displacement of the cones of low-frequency drivers. The movement of the membrane is recorded with industrial or consumer market high-speed cameras with frame rates greater than or equal to 240 fps. The measured displacement shows acceptable to very good agreement with the one measured by a laser vibrometer, depending on the camera model. The displacement of the membrane, coupled to the measured electrical impedance, can be used to retrieve the small signal parameters or some non-linear parameters of the speaker. Finally, the vision methods are used to retrieve the vibration patterns of the membrane.
ER  -