Loudspeaker made from films

A loudspeaker comprising:

• a layer structure having a plurality of layers and forming an active sound-radiating loudspeaker surface, each layer extending across the loudspeaker surface, the layers including:
• a first diaphragm sheet coated with a first electrically conductive layer;
• a second diaphragm sheet coated with a first electrically conductive layer;
• and
• a first elastic, nonconductive interlayer sandwiched between the first diaphragm sheet and the second diaphragm sheet;
• a static high-voltage supply electrically coupled to the first and second electrically conductive layers, adapted to generate an electric field between the first electrically conductive layer and the second electrically conductive layer;
• and
• an audio source adapted to influence the electric field via a capacitor.

A loudspeaker comprising:

• a layer structure having a plurality of layers and forming an active sound-radiating loudspeaker surface, each layer extending across the loudspeaker surface, wherein all layers are at least partially connected to neighbouring layers, the layers including:
• a first nonconductive layer formed from a plastic sheet;
• a first conductive layer;
• a second conductive layer;
• and
• up to two nonconductive elastic interlayers sandwiched between the first and second conductive layers, wherein each interlayer is adapted to allow movement of neighbouring layer on at least one side of the interlayer for sound generation;
• a variable high-voltage supply adapted to apply a bias voltage between the first and second conductive layers, wherein voltage variations in the bias voltage transmit electrical audio signals to at least one of the first and second conductive layers;
• and
• a stabilising and inertial element is connected to the layer structure, and a protective element covering the layer structure and adapted to protect persons from the high-voltage potential in the conductive layers.