Editing MP3 (section)

=== Going public ===
A reference simulation software implementation, written in the C language and later known as ''ISO 11172-5'', was developed (in 1991–1996) by the members of the ISO MPEG Audio committee to produce bit-compliant MPEG Audio files (Layer 1, Layer 2, Layer 3). It was approved as a committee draft of the ISO/IEC technical report in March 1994 and printed as document CD 11172-5 in April 1994.<ref name="paris_press" /> It was approved as a draft technical report (DTR/DIS) in November 1994,<ref name="singapore_press" /> finalized in 1996 and published as international standard ISO/IEC TR 11172-5:1998 in 1998.<ref name="ISO/IEC TR 11172-5:1998" /> The [[Reference implementation (computing)|reference software]] in C language was later published as a freely available ISO standard.<ref name="Software_Simulation.zip" /> Working in non-real time on several operating systems, it was able to demonstrate the first real-time hardware decoding (DSP based) of compressed audio. Some other real-time implementations of MPEG Audio encoders and decoders<ref>{{Cite book|title=A high-quality sound coding standard for broadcasting, telecommunications and multimedia systems.|last=Dehery |first=Yves-Francois|publisher=Elsevier Science BV |year=1994|isbn= 978-0-444-81580-4 |location=The Netherlands |pages=53–64|quote= This article refers to a Musicam (MPEG Audio Layer II) compressed digital audio workstation implemented on a microcomputer used not only as a professional editing station but also as a server on Ethernet for a compressed digital audio library, therefore anticipating the future MP3 on Internet }}</ref> were available for digital broadcasting (radio [[Digital audio broadcasting|DAB]], television [[DVB]]) towards consumer receivers and set-top boxes.

On 7 July 1994, the Fraunhofer Society released the first software MP3 encoder, called [[l3enc]].<ref name="MP3_Todays_Technology" /> The [[filename extension]] ''.mp3'' was chosen by the Fraunhofer team on 14 July 1995 (previously, the files had been named ''.bit'').<ref name="mp3-name" /> With the first real-time software MP3 player [[WinPlay3]] (released 9 September 1995) many people were able to encode and play back MP3 files on their PCs. Because of the relatively small [[hard drive]]s of the era (≈500–1000 [[megabyte|MB]]) lossy compression was essential to store multiple albums' worth of music on a home computer as full recordings (as opposed to [[MIDI]] notation, or [[Tracker (music software)|tracker]] files which combined notation with short recordings of instruments playing single notes).

==== Fraunhofer example implementation ====
A hacker named SoloH discovered the [[source code]] of the "dist10" MPEG [[reference implementation]] shortly after the release on the servers of the [[University of Erlangen]]. He developed a higher-quality version and spread it on the internet. This code started the widespread [[CD ripper|CD ripping]] and digital music distribution as MP3 over the internet.<ref>{{cite web |url-status=live |url=https://www.theatlantic.com/magazine/archive/2000/09/the-heavenly-jukebox/305141/ |archive-url=https://web.archive.org/web/20130430043648/https://www.theatlantic.com/magazine/archive/2000/09/the-heavenly-jukebox/305141/ |archive-date=30 April 2013 |website= [[The Atlantic]] |quote=To show industries how to use the codec, MPEG cobbled together a free sample program that converted music into MP3 files. The demonstration software created poor-quality sound, and Fraunhofer did not intend that it be used. The software's "source code"—its underlying instructions—was stored on an easily accessible computer at the University of Erlangen, from which it was downloaded by one SoloH, a hacker in the Netherlands (and, one assumes, a Star Wars fan). SoloH revamped the source code to produce software that converted compact-disc tracks into music files of acceptable quality. |url-access=subscription |title=The Heavenly Jukebox |first1=Charles C. |last1=Mann  |date=September 2000 }}</ref><ref>''[https://books.google.com/books?id=3M2hAgAAQBAJ&dq=SoloH+mp3+source+code&pg=PT75 Pop Idols and Pirates: Mechanisms of Consumption and the Global Circulation of Popular Music]'' by Charles Fairchild. {{Webarchive|url=https://web.archive.org/web/20231015095150/https://books.google.com/books?id=3M2hAgAAQBAJ&dq=SoloH+mp3+source+code&pg=PT75 |date=15 October 2023 }}.</ref><ref>[http://ijoc.org/index.php/ijoc/article/viewFile/1765/989 Technologies of Piracy? - Exploring the Interplay  Between Commercialism and Idealism in the Development of MP3 and DivX] {{Webarchive|url=https://web.archive.org/web/20200919101723/https://ijoc.org/index.php/ijoc/article/viewFile/1765/989 |date=19 September 2020 }} by HENDRIK STORSTEIN SPILKER, SVEIN HÖIER, page 2072</ref><ref>[https://web.archive.org/web/20170103170919/http://www.euronet.nl/~soloh/mpegEnc/ www.euronet.nl/~soloh/mpegEnc/] ([[Archive.org]])</ref>