9 Apparatus and instruments for recording, transmitting and reproduction of sound and/or pictures including apparatus for receipt, storing, reproduction, play back, recording and transmitting of sound and/or pictures; microphones, sound modules, amplifiers, echo compensator, mixing equipment, loudspeakers, remote controls apparatus, radio receivers, radios, television receivers, remote controls, disc players, memory based players and portable terminals, magnetic data bearer, records; data processing equipment and computers