Modal Crossover Networks for Flat-Panel Loudspeakers

Anderson D, Bocko MF. Modal Crossover Networks for Flat-Panel Loudspeakers. J Audio Eng Soc. 2016;64(4):229-240. doi:10.17743/jaes.2016.0005

@article{Anderson2016_18131,
  author = {Anderson, David and Bocko, Mark F.},
  title = {{Modal Crossover Networks for Flat-Panel Loudspeakers}},
  journal = {Journal of the Audio Engineering Society},
  volume = {64},
  number = {4},
  pages = {229--240},
  year = {2016},
  month = apr,
  publisher = {Audio Engineering Society},
  doi = {10.17743/jaes.2016.0005},
  url = {https://doi.org/10.17743/jaes.2016.0005}
}

TY  - JOUR
TI  - Modal Crossover Networks for Flat-Panel Loudspeakers
AU  - Anderson, David
AU  - Bocko, Mark F.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 64
IS  - 4
SP  - 229
EP  - 240
PY  - 2016
DA  - 2016/04/06
DO  - 10.17743/jaes.2016.0005
UR  - https://doi.org/10.17743/jaes.2016.0005
PB  - Audio Engineering Society
LA  - en
AB  - Loudspeakers that produce sound from the bending vibrations of flat plates offer an attractive design alternative for applications in which a low-profile loudspeaker form factor is desirable, such as displays or windows. However, vibrating panel speakers may exhibit irregular low-frequency response and phase distortions due to the presence of isolated low-frequency panel modes. A method is presented for tuning the frequency response of flat-panel loudspeakers by employing force-driver arrays. The method enables independent actuation of specific panel bending modes, which can be combined with a frequency crossover network to allow extensive tuning of the loudspeaker. Experiments demonstrate that independent control of plate modes is achievable with a small array of inertial drivers affixed to the plate and a wide variety of acoustic responses are possible, including cancellation of the adverse effects of isolated low-frequency plate modes.
ER  -