Electronic equipment, namely, microphones, loudspeakers, sound amplifiers, audio amplifiers, electronic control circuits for cellular phones, notebook computers, laptop computers, personal digital assistant, communication equipment, audio equipment, hand-held devices, wired and wireless headsets, mobile computing devices, battery adapters, remote computer keyboards, remote controls for televisions and stereos, interface converters, cellular audio adapters, and telephone accessory interface circuits; electroacoustic transducers, miniature electrical transducers, wired and wireless headsets for telephones, headsets for use with computers, video cameras, digital cameras, digital signal processor (DSP), microphones, microphone arrays, loudspeaker arrays, silicon microphones, and microelectromechanical sensors used to sense temperature, humidity, stress, pressure, motion, sound, vibrations, electricity and electromagnetic fields for use in the automotive, industrial, medical, telecommunications and computer fields, home electronics, home entertainment systems, gaming systems; electronic control circuits for hearing aids, medical devices and assistive hearing devices; miniature electrical transducers, namely, microphones and audio receivers; electric or electronic sensors for angular rate measurement; electrical sensors for the determination of temperatures, positions and distances; Multifunction electrical transducers, multifunction sensors for measuring multiple physical parameters and multiple environmental parameters, not for medical use, multi-physics sensors for measuring multiple physical and chemical parameters, not for medical use, chemical sensors for measuring chemical levels in the air, water and gaseous/aqueous solutions, not for medical use; application specific integrated circuit containing programming used to amplify and process the signal from the multifunction sensors and multi-physics sensors; ultrasound transmitter and receivers, not for medical use; computer software, namely, signal processing algorithm and software