Patent ID: 9154882
Filing Date: 2015-10-06
Classification: H04R

Abstract:
1. A sound generator configured to emit sound, comprising: a rigid element enclosing a plurality of air compartments, the rigid element comprising: an air space, within the sound generator, separated from the plurality of air compartments by the back side of the rigid element and external to the rigid element; a rigid housing comprising a rigid back part that extends opposite the back side of the rigid element; a support structure configured to flexibly hold the rigid element in relation to the rigid housing; and an actuator configured to drive the rigid element to perform a piston type of movement, in a transverse direction with respect to the back side and front side surfaces of the rigid element, during operation to generate sound; wherein the actuator comprises: wherein the air space is located between the rigid back part of the rigid housing and the back side of the rigid element so that the rigid housing and the rigid element are spaced-apart, wherein the rigid element is movable in relation to the rigid back part of the rigid housing by flexing the support structure during operation of the actuator, wherein the apertures are in air connection with the air space along the back side of the rigid element, and wherein the support structure provides a seal around a perimeter of the rigid element.