MEMS
In recent years, there had been research on the topic of construction of digital loudspeaker arrays in Digital Sound Reconstruction system using Microelectromechanical systems (MEMS). MEMS microspeaker arrays can be manufactured onto a chip using a CMOS process. A single chip system will have less variations between each subunit compare to a multi-chip system. An Australian-Israel company called “Audiopixels” recently demonstrated proof of concept in the company’s clean room. The audio demonstrates the effectiveness of the MEMS technology after many years of development. CMOS-MEMS process reduce the size of each subunit to a few hundred μm in diameter.