Wikipedia
Wire recording or magnetic wire recording is an analog type of audio storage in which a magnetic recording is made on thin steel or stainless steel wire. the first crude magnetic recorder was invented in 1898 by Valdemar Poulsen.
The wire is pulled rapidly across a recording head which magnetizes each point along the wire in accordance with the intensity and polarity of the electrical audio signal being supplied to the recording head at that instant. By later drawing the wire across the same or a similar head while the head is not being supplied with an electrical signal, the varying magnetic field presented by the passing wire induces a similarly varying electric current in the head, recreating the original signal at a reduced level.
Magnetic wire recording was replaced by magnetic tape recording, but devices employing one or the other of these media had been more or less simultaneously under development for many years before either came into widespread use. The principles and electronics involved are nearly identical. Wire recording initially had the advantage that the recording medium itself was already fully developed, while tape recording was held back by the need to improve the materials and methods used to manufacture the tape.
Usage examples of "wire recording".
A killer-hoodlum who longed to be a nightclub comic and got weepy over lost dogs and crippled kids brought a big-city police department to its knees with a wire recording: Vice cops taking bribes and chauffeuring prostitutes.
Furthermore, we now have a wire recording of U-691 's most recent transmission, which she and I have been studying intensively.
Gonzalez, a short, bald Filipino, on the translation of the wire recording.