MLA Citation: Bloomfield, Louis A. "Question 422"
How Everything Works 20 Apr 2018. 20 Apr 2018 <http://howeverythingworks.org/print1.php?QNum=422>.
422. Do you know anything about a special kind of digital tape that could replace the CD?
Digital audiotapes have been around for a few years. These tapes store sound as digital information on a tape. Because of the digital recording and playback, the reproduction is almost perfect. The digital process involves an enormous amount of information each second; too much to be recorded in the conventional method used in cassette tapes. Instead, I think that a helical technique is used, in which information is written as diagonal stripes across the length of the passing tape. By writing a closely spaced series of these stripes, the DAT (digital audio tape) player uses much more of the tape's surface than a standard cassette and stores much more information on that surface. I doubt that DAT tapes will replace CD's because CD's are so easy to mass-produce. DAT tapes must be recorded one at a time.

Return to HowEverythingWork.org
Generated for printing on Friday, April 20, 2018 at 22:00:15 EDT
Copyright 1997-2018 © Louis A. Bloomfield, All Rights Reserved
Privacy Policy