Fig. 1: MEMS micro loudspeaker utilizing air chambers.
From: Concept and proof for an all-silicon MEMS micro speaker utilizing air chambers

a schematic 3D representation. b Cross-sectional schematic (not to scale)
From: Concept and proof for an all-silicon MEMS micro speaker utilizing air chambers

a schematic 3D representation. b Cross-sectional schematic (not to scale)