Charge Movements on the Stretched Membrane in a Circular Electrostatic Push-Pull Loudspeaker

Streng JH. Charge Movements on the Stretched Membrane in a Circular Electrostatic Push-Pull Loudspeaker. J Audio Eng Soc. 1990;38(5):331-339. Available from: https://aes.org/publications/elibrary-page/?id=6033

@article{Streng1990_6033,
  author = {Streng, Johannes H.},
  title = {{Charge Movements on the Stretched Membrane in a Circular Electrostatic Push-Pull Loudspeaker}},
  journal = {Journal of the Audio Engineering Society},
  volume = {38},
  number = {5},
  pages = {331--339},
  year = {1990},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=6033}
}

TY  - JOUR
TI  - Charge Movements on the Stretched Membrane in a Circular Electrostatic Push-Pull Loudspeaker
AU  - Streng, Johannes H.
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 38
IS  - 5
SP  - 331
EP  - 339
PY  - 1990
DA  - 1990/05/06
UR  - https://aes.org/publications/elibrary-page/?id=6033
PB  - Audio Engineering Society
LA  - en
AB  - An analysis is made of the charge movements on the membrane of an electrostatic push-pull loudspeaker. It is shown that in steady-state operation (harmonic exitation) the movement of charge causes two important effects: harmonic distortion and a net change of static membrane charge. The former effect is found to be of minor interest in properly designed loudspeakers, whereas the latter causes the steady-state frequency characteristics to be input-level dependent. Measurements show that this level dependence may reach values well above 1-dB deviation from strictly linear behavior. A theoretical model is presented from which the charge distribution in a circular electrostatic push-pull loudspeaker can be calculated. The theoretical results are shown to conform with measurements.
ER  -