Skip to main content

EVER HEARD OF AUDIO WIRE RECORDING?


SO WHAT IS WIRE RECORDING?

Wire recording or magnetic wire recording was the first early magnetic recording technology. An analog type of audio storage in which a magnetic recording was made on a thin steel wire.

The first crude recorder was invented in 1898 by Danish inventor Valdemar Poulsen.  With the first magnetic audio recorder to be made commercially available anywhere was The Telegraphone, which was manufactured by the American Telegraphone Company in Springfield Massachusetts.


HOW DOES IT WORK?

The wire is pulled rapidly across a recording head which magnetises 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 similar head whilst the head is not being supplied with an electrical signal, the varying magnetic field induces a varying electric current in the head recreating the original signal at a reduced level.

WHAT REPLACED THE WIRE RECORDER?

Magnetic wire recording was replaced by magnetic tape recording. The principles and the electronics are nearly identical. The magnetic tape was already in existence but the wire recording had an advantage, having that it was already fully developed whilst the tape recording was held back by the need to improve the materials and methods used to manufacture the tape.

Warm regards
Cheryl
Director
Oxford Duplication Centre
cheryl@oxfordduplicationcentre.com
01865 457000


Comments

Popular posts from this blog

How to Digitise Glass Plate Negatives | Oxford Archiving

The Preservation of The Curnock Glass Plate Negatives Introduction Our services ( @OxfordDuplicat1 )  are highly recommended in the UK for specialist photographic film scanning. Trusted to our company, we are preparing The Curnock glass plate collection, held at Oxford Brookes University and part of the  @MethodistGB collection. Almost all archives possess some type of photographic collection. Many individuals typically think of “photographs” as plastic-based negatives and slides; but these photographic techniques are relatively recent inventions. Prior to the invention of cellulose nitrate film in 1903, photographic emulsions were made on glass supports. These glass supports are typically referred to as glass plate negatives. The term “glass plate negative” refers to two separate formats: the collodion wet plate negative and the gelatin dry plate. Both of these formats consist of a light sensitive emulsion that is fixed to the glass plate base with a binder. Dozens of photographic te

How Magnetic's Can Destroy Your Family VHS Tape Memories

MAGNETIC DAMAGE TO FAMILY VIDEO TAPES Magnetic tape damage is pretty common. Family tapes store video and audio information in the form of a magnetic strip. The VCR has special heads that can pick up on these magnetic signals and translate them into images and sound that plays on your TV. While magnets are used to write information to the tape, they are also used to erase footage from your tape. Since VHS uses an iron oxide as its formula, this makes them very susceptible to magnetic damage. A tape that has been exposed to magnetic damage is nearly always irreparable. There is no way to recover footage that has been magnetically erased or damaged. The best bet is to make sure you keep your video tapes away from anything resembling a magnet! CLIENT CASE Unfortunately one of our clients contacted us Friday with regard to his family Hi8 video tapes that had been damaged by the magnetic field given off by a mobile phone. He asked whether our company would be able to help recover

What is Betacam SP? Is it Still in Use?

Sony’s Betamax lost out to JVC’s VHS in the home video entertainment format war in the 1980s.   This didn’t stop Sony from venturing into another ‘Beta’ format, namely, Betacam SP or Beta SP. SP stands for Superior Quality.   Sony introduced this analogue video camera format in 1986.  Before Betacam SP was Betacam which was released in 1982 as the ‘pro version’ of Betamax.   Betacam SP is an enhancement of the Betacam format. The Betacam system was a 1/2-inch tape format (similar to VHS and Betamax) that needed a camcorder, video recorder, and tape. It was targeted at the professional market.    It was meant to be an improvement on Sony’s 3/4-inch U-Matic tape format.   Betacam tapes came in two sizes – Short (S) and Long (L).   Betacam camcorders for consumers could only load the S version.   Only broadcast stations with a complete Beta system could support both the S and L versions through recorders meant for editing.   Betacam offered a horizontal resolution of three hundred lines