Finite Element Modelling of a Loudspeaker Part 2: Applications

Geaves GP, Henwood DJ, Vanderkooy J. Finite Element Modelling of a Loudspeaker Part 2: Applications. In: AES Convention 119. Audio Engineering Society; 2005. Paper 6593. Available from: https://aes.org/publications/elibrary-page/?id=13371

@inproceedings{Geaves2005_13371,
  author = {Geaves, Gary P. and Henwood, David J. and Vanderkooy, John},
  title = {{Finite Element Modelling of a Loudspeaker Part 2: Applications}},
  booktitle = {AES Convention 119},
  note = {Paper 6593},
  year = {2005},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13371}
}

TY  - CPAPER
TI  - Finite Element Modelling of a Loudspeaker Part 2: Applications
AU  - Geaves, Gary P.
AU  - Henwood, David J.
AU  - Vanderkooy, John
T2  - AES Convention 119
M1  - Paper 6593
PY  - 2005
DA  - 2005/10/06
UR  - https://aes.org/publications/elibrary-page/?id=13371
PB  - Audio Engineering Society
LA  - en
AB  - The finite-element loudspeaker model presented in Part 1 is extended to three applications. Firstly, we study the effect of a significant increase of the magnetic motor strength Bl on the breakup modes and other resonances of a typical driver. Approximations to the theory allow modal decomposition even when the loudspeaker voice coil is driven from a normal amplifier, showing that the modes most affected are those for which the back-emf due to voice-coil motion is strong. Secondly, we probe how the shape of the cone influences the resonances, breakup, and acoustic performance. Cones that flare outwards have the most desirable characteristics. A final third study concerns the result of a change in the distribution of the damping and stiffness of parts of the driver, to see if useful characteristics ensue. The model is also used to investigate some aspects of measurements.
ER  -