| 摘要 |
The invention relates to a method of and an arrangement for damping a wall movement. In the invention, the strength of an electric field between a surface of the wall and an air-permeable mass plate (3) parallel with the surface is controlled to provide a force opposite to the wall-moving force. A sound wave, for instance, may cause a force moving a wall back and forth, which force is cancelled by the opposite force by means of the method and arrangement of the invention, whereby the movement applied to the wall by the sound wave can be stopped.
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