Modeling the Intermodulation Distortion of a Coaxial Loudspeaker

Dupont E, Lipshitz S. Modeling the Intermodulation Distortion of a Coaxial Loudspeaker. In: AES Convention 127. Audio Engineering Society; 2009. Paper 7840. Available from: https://aes.org/publications/elibrary-page/?id=15035

@inproceedings{Dupont2009_15035,
  author = {Dupont, Edward and Lipshitz, Stanley},
  title = {{Modeling the Intermodulation Distortion of a Coaxial Loudspeaker}},
  booktitle = {AES Convention 127},
  note = {Paper 7840},
  year = {2009},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15035}
}

TY  - CPAPER
TI  - Modeling the Intermodulation Distortion of a Coaxial Loudspeaker
AU  - Dupont, Edward
AU  - Lipshitz, Stanley
T2  - AES Convention 127
M1  - Paper 7840
PY  - 2009
DA  - 2009/10/06
UR  - https://aes.org/publications/elibrary-page/?id=15035
PB  - Audio Engineering Society
LA  - en
AB  - This paper is an attempt to explain the intermodulation distortion of a coaxial loudspeaker driver. Such a loudspeaker, in which the woofer and tweeter are excited at frequencies f1 and f2 respectively, is known to produce sum and difference frequencies f± = f1 ± f2. Generation of these can be attributed to both the nonlinearity of the equations of motion and the Lagrangian boundary behavior of the woofer. A simplified model is used consisting of an acoustic monopole located in front of a baffled planar piston. To characterize the phenomena of interest the second-order equation for pressure is used. An exact integral solution is then given for the f± pressure terms. A special case analytic solution is also discussed. Several numerical investigations of the model are performed and compared with experiment.
ER  -