Technology
The basic principle of a bending wave loudspeaker
In order to illustrate the basic principle of a bending wave loudspeaker, the following image is very helpful:
Just imagine you are throwing a stone into a lake!
The water surface is being destabilised by this impulse. This shows, as we can witness a wave that propagates equally to each side.
A bending wave loudspeaker is based on the same principle:
A wave front is being raised on a membrane (in our case the water surface) by an electrodynamic exciter (in our case the stone). This wave front propagates on the membrane, exactly like the wave front on the water surface. A bending wave has emerged. Due to the changes of air pressure resulting from this wavefront we hear an acoustic noise.
