| 摘要 |
A loudspeaker(1) relates to a capacitive membrane(2) positions tracking used in a standard electro-dynamical speaker and offers an additional way of sensing the speaker(1) via the electric interface. State of the art techniques use the voice coil for sensing the speakers' impedance. There are double coil setups where a second coil layer is wound over the whole height of the voice coil in order to maximize power by a given battery voltage. The loudspeaker(1) is based on a capacitive principle found within state of the art C-microphones, but incorporated in the membrane plate which is used by now for stiffening the membrane(2). A simple two wire interface senses the position and requires only few components. |
