Noise reduction technology used in headphones; Computer memory devices sold as component feature of headphones and earphones; electronic voice command and recognition apparatus sold as a component feature of headphones and earphones with remote controls for controlling computers, internet services, applications, mobile electronic devices, wearable electronic devices, audio and video players and recorders; Electronic devices providing mobile navigation through 3D audio spatialization; Downloadable and recorded software application featuring mobile navigation through 3D audio spatialization sold as a component feature of headphones and earphones; Downloadable and recorded software that uses artificial intelligence to hear and interpret data, to connect with hardware and software, and to store, manage and process data in the cloud sold as a component feature of headphones and earphones; Apparatus for recording, transmission or reproduction of sound; audio speakers; wireless headsets for smartphones; wired earphones; earphones and headphones; wireless transmitters and receivers; wireless adapters for computers and audio equipment; audio amplifiers; bass amplifiers; sound amplifiers