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What is a MD disk?

By Jakob Jelling
Snapjunky.com

MD stands for Mini Disk, and as it name suggests it is a disk of very small size. A Mini Disk or MD has a height of 6.75 cm, a width of 7 cm and a depth of 0.5 cm. MDs allow its users to record and storage audio files by using a sound quality similar to CDs and which could last for over 30 years.

MD disks are used for the storage of digital sound with a quality similar to CDs. An MD compresses the information that it storages by discarding some of the data it receives and which would not affect the way in which final product would sound to us but allows the sound information to be recorded in a smaller size disk.

There are two different types of MDs which can be divided as pre recorded MDs and recordable ones. Pre recorded MDs are very similar to CDs in they way they function as well as in the materials they are made of. Pre recorded MDs are made of a plastic and aluminum material similar to CDs and they don't allow any further recording or erasing.

Recordable MDs are made of a similar material but contain a pre-groove which allows the recording machine to storage new digital information. In order to record sound on an MD, it is necessary to use a MD recording machine which would properly record and storage any new information the user wish to add to a disk of this kind.

MD disks record audio files in different tracks in such a way that allows users to erase and record as many times as they wish, while it re-arranges the data within the free space remaining. Recordable MDs can be recorded about one million times, so users should not worry about that aspect while erasing and recording again.

Data recorded and stored on recordable MDs can endure about 30 years. During a time lapse of 30 years, users can use a recordable MD without loosing sound quality since these disks would not start degrading or loosing its good quality until that amount of time has passed.

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