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In tape recorders such as reel-to-reel and compact cassette audio tape recorders, remnant magnetic fields will over time gather on metal parts such as guide posts tape heads. These are points that come into contact with the magnetic tape. The remnant fields can cause an increase in audible background noise during playback.
"VCR"-format cassettes in case (left) and on own (right). A full-size CD is shown for scale. Size comparison between a Betamax cassette (top) and a VHS cassette (bottom) The videotape format war was a period of competition or "format war" of incompatible models of consumer-level analog video videocassette and video cassette recorders (VCR) in the late 1970s and the 1980s, mainly involving the ...
A third design consists of a cassette shell with a head cleaning tape wound on the spools and a magnetic disc mounted above the head cleaner tape. When the deck "plays" the cassette, the tape cleans the heads and simultaneously the magnet rotates, creating the alternating magnetic field required for demagnetizing. [citation needed]
Optical disc authoring, including CD, DVD, and Blu-ray Disc authoring, is the process of assembling source material—video, audio or other data—into the proper logical volume format to then be recorded ("burned") onto an optical disc (typically a compact disc or DVD).
In March 2010, TalkTalk, as part of its campaign against the UK Government's filesharing proposals, created a spoof video entitled "Home Taping is Killing Music". The song was written and performed by singer/songwriter Dan Bull and featured lookalikes of Madonna , George Michael and Adam Ant lip-synching to the song.
Audio and video tapes require specific care and handling to ensure that the recorded information will be preserved. For information that must be preserved indefinitely, periodic transcription from old media to new ones is necessary, not only because the media are unstable but also because the recording technology may become obsolete.
Data remanence is the residual representation of digital data that remains even after attempts have been made to remove or erase the data. This residue may result from data being left intact by a nominal file deletion operation, by reformatting of storage media that does not remove data previously written to the media, or through physical properties of the storage media that allow previously ...
(For an audio CD, the user-data is the audio itself; for a data CD, it is the filesystem and file data.) One of the sub-channels — the Q-channel — states the drive's current position relative to the beginning of the CD and the current track. This was designed for Audio-CDs (which for a few years were the only CDs), where this information is ...