Apparatus for recording, transmission or reproduction of sound or images, cameras, photographic cameras, television apparatus, video recorders, CD and DVD players and recorders, MP3 players, computers, desktop computers, tablet computers, wearable computers, wearable speakers, wearable activity trackers, wearable video display monitors, head-mounted displays, head-mounted cameras, microphones, loudspeakers, earphones, telecommunications apparatus, apparatus for the reproduction of sound or im...