Editing Magnetic tape (section)

===Audio===
[[File:Kaseta magnetofonowa ubt.jpeg|thumb|[[Compact Cassette]] ]]
{{Main|Audiotape}}
Magnetic tape was invented for recording sound by [[Fritz Pfleumer]] in 1928 in Germany.<ref>{{cite book | title = Magnetic Recording: The First 100 Years |author1=Eric D. Daniel |author2=C. Denis Mee |author3=Mark H. Clark | publisher = Wiley-IEEE | year = 1998 | isbn = 0-7803-4709-9 | url = https://books.google.com/books?id=7WrCSCqMk5gC&q=%22Fritz+Pfleumer%22+tape&pg=PA48 }}</ref>

Because of escalating political tensions and the outbreak of World War II, these developments in Germany were largely kept secret. Although the Allies knew from their monitoring of Nazi radio broadcasts that the Germans had some new form of recording technology, its nature was not discovered until the Allies acquired German recording equipment as they invaded Europe at the end of the war.<ref>{{Cite web|url=https://www.bbc.co.uk/programmes/p07dg3wm|title=BBC World Service – The Documentary Podcast, A History of Music and Technology: Sound Recording|date=18 June 2019 |publisher=BBC|language=en-GB|access-date=2019-07-01|archive-url=https://web.archive.org/web/20190701223615/https://www.bbc.co.uk/programmes/p07dg3wm|archive-date=1 July 2019|url-status=live}}</ref> It was only after the war that Americans, particularly [[Jack Mullin]], [[John Herbert Orr]], and [[Richard H. Ranger]], were able to bring this technology out of Germany and develop it into commercially viable formats. [[Bing Crosby]], an early adopter of the technology, made a large investment in the tape hardware manufacturer [[Ampex]].<ref name="Fenster">{{cite magazine |author=Fenster, J.M. |url=http://www.americanheritage.com/articles/magazine/it/1994/2/1994_2_52.shtml |title=How Bing Crosby Brought You Audiotape |magazine=Invention & Technology |date=Fall 1994 |archive-url=https://web.archive.org/web/20110404045940/http://www.americanheritage.com/articles/magazine/it/1994/2/1994_2_52.shtml |archive-date=4 April 2011 |url-status=dead}}</ref>

A wide variety of audiotape recorders and formats have been developed since. Some magnetic tape-based formats include:
* [[Reel-to-reel]]
* [[Fidelipac]]
* [[Stereo-Pak]] (Muntz Stereo-Pak, commonly known as the 4-track cartridge)
* [[Sound follower#Operation|Perforated (sprocketed) film audio magnetic tape (sepmag, perfotape, sound follower tape, magnetic film)]]
* [[8-track tape]]
* [[Compact Cassette]]
* [[Elcaset]]
* [[RCA tape cartridge]]
* [[Mini-Cassette]]
* [[Microcassette]]
* [[Picocassette]]
* [[NT (cassette)]]
* [[ProDigi]]
* [[Digital Audio Stationary Head]]
* [[Digital Audio Tape]]
* [[Digital Compact Cassette]]