42 Scientific research and development; product research and development; industrial research in the field of apparatuses for recording, transmission, processing and reproduction of audio signals, loudspeakers, microphones, portable audio players, audio receivers, sound recording apparatus, mobile telephones, smartphones, tablet computers, laptop computers, computers, headphones; industrial research in the field of cabinets for loudspeakers, integrated acoustic transformer systems comprised of one or more audio transducers, acoustic conduits, acoustic diaphragms, namely, transducers that inter-convert electrical signals to sounds or vice-versa, horns for loudspeakers; industrial research in the field of microelectromechanical systems (MEMS) consisting of silicon-based actuators and sensors, MEMS loudspeakers, MEMS microphones, microphones and loudspeakers manufactured using complementary metal oxide semiconductor (CMOS) technology, MEMS electric actuators, MEMS acoustic diaphragms, namely, acoustic baffles sold as a component of loudspeakers; design and development of apparatuses for recording, transmission, processing and reproduction of audio signals, loudspeakers, microphones, portable audio players, audio receivers, sound recording apparatus, mobile telephones, smartphones, tablet computers, laptop computers, computers, headphones; design and development of cabinets for loudspeakers, integrated acoustic transformer systems comprised of one or more audio transducers, acoustic conduits, acoustic diaphragms, namely, transducers that inter-convert electrical signals to sounds or vice-versa, horns for loudspeakers; design and development of microelectromechanical systems (MEMS) consisting of silicon-based actuators and sensors, MEMS loudspeakers, MEMS microphones, microphones and loudspeakers manufactured using CMOS technology, MEMS electric actuators, MEMS acoustic diaphragms, namely, acoustic baffles sold as a component of loudspeakers; design and development of computer software and data processing computer programs