TY - JOUR
AB - AT the Paris Universal Exhibition of 1900, Poulsen demonstrated his telegraphone as a magnetic speech recorder for use in a telephone circuit. The apparatus, in its earliest form, consisted of a steel wire or ribbon, which was passed between the poles of an electromagnet, the windings of which were supplied with the audio-frequency currents to be recorded. As the wire was drawn slowly through the field of the magnet, it received therefrom a series of transverse magnetisations corresponding to the sounds received. On the completion of the record, the process could be reversed, and by passing the steel wire between the poles of another magnet connected in series with a telephone receiver, the speech was reproduced.
TI - Magnetic Recording and Reproducing in Broadcasting
JF - Nature
DO - 10.1038/133468a0
DA - 1934-03-24
UR - https://www.deepdyve.com/lp/springer-journals/magnetic-recording-and-reproducing-in-broadcasting-eXD4oBGuPC
SP - 468
EP - 469
VL - 133
IS - 3360
DP - DeepDyve
ER -