US Patent 11184718 Miniature speaker with multiple sound cavities

The present invention relates to a miniature speaker comprising a plurality of sound generating elements, wherein each sound generating element comprises a sound cavity and a moveable element associated therewith, wherein the moveable element comprises one or more cantilever beams configured to move said moveable element and thus generate sound pressure waves in response to an applied drive signal. The present invention further relates to a receiver assembly comprising the miniature speaker, and a hearing device comprising the receiver assembly.