Patent ID: 9357312
Filing Date: 2016-05-31
CPC Classification: H04R

Claim Text:
1. A system of audio speakers, comprising a plurality of individually controlled electromechanical polymer (EMP) actuators each comprising a plurality of EMP layers between a pair of electrodes, the electrodes being provided to allow, alternatively, charging the EMP layers during a sensing operation and receiving an excitation signal for driving the EMP layers in mechanical motion, wherein each EMP actuator, when activated by an excitation signal within the audio frequency range, provides an audible sound having frequencies substantially those in the excitation signal and wherein the EMP actuators are arranged in a predetermined patterned on a substrate, being organized to selectively assume any one of two or more configurations, such that in a first configuration, the EMP actuators are activated by the some excitation signal to achieve a desired audio volume for a predetermined sound and, in a second configuration, the EMP actuators are each selectively activated by a predetermined one of two or more excitation signals that are different from each other, so that the EMP actuators reproduce a predetermined combination of sounds.