MPEG Audio Decoder

{{multiple issues| {{Notability|Products|date=August 2011}} {{refimprove|date=November 2011}} }} {{Infobox software |name = madplay |screenshot = |caption = |developer = Robert Leslie |released = 2000 |latest_release_version = 0.15.2b |latest_release_date = {{release date|2004|02|23}} |operating_system = Linux, FreeBSD, macOS |programming language = C |genre = Media player |license = GPLv2<ref>{{cite web |title=GNU General Public License |url=https://www.underbit.com/resources/license/gpl |website=underbit |accessdate=6 September 2019}}</ref> |website = {{URL|underbit.com/products/mad/}} |repo = {{URL|https://sourceforge.net/projects/mad/}} }}

'''MPEG Audio Decoder''' (MAD) is a GPL library for decoding files that have been encoded with an MPEG audio codec.<ref name="linux-sound mpeg players encoders">{{cite web | url=http://www.linux-sound.org/mpeg.html | title=MPEG Players & Encoders | publisher=linux-sound.org | accessdate=November 3, 2011 | quote=MAD Robert Leslie's GPL'd MPEG audio decoder}}</ref> It was written by Robert Leslie and produced by Underbit Technologies. It was developed as a new implementation, on the ISO/IEC standards.<ref name="freecode mad">{{cite web | url=http://freecode.com/projects/libmad | title=MAD | publisher=Freecode | accessdate=November 3, 2011 | quote=MAD is a high-quality MPEG audio decoder capable of 24-bit output. All computations are performed with fixed-point integer arithmetic, making it ideal for systems without a floating-point unit. The implementation is entirely new, based on the ISO/IEC standards.}}</ref>

It consists of libmad, a software library, and madplay, a command-line program for MP3 playback. libmad is notable for using only fixed-point arithmetic<ref name="freecode mad" /><ref name="mp3-tech mpeg source codes">{{cite web | url=http://www.mp3-tech.org/programmer/decoding.html | title=MPEG source codes | publisher=mp3-tech.org | accessdate=November 3, 2011 | quote=MAD is an mpeg-1 decoder using only integer computation.}}</ref><ref name="manpages.ubuntu.com madplay">{{cite web | url=http://manpages.ubuntu.com/manpages/oneiric/man1/madplay.1.html | title=madplay | publisher=Ubuntu Manpage Repository | accessdate=November 3, 2011 | quote=Among the special features of MAD are 24-bit PCM resolution and 100% fixed-point (integer) computation. | url-status=dead | archiveurl=https://web.archive.org/web/20120404160612/http://manpages.ubuntu.com/manpages/oneiric/man1/madplay.1.html | archivedate=April 4, 2012 }}</ref> while madplay is notable for its ReplayGain support.

Development ended decades ago, and vulnerabilities identified since then have gone unpatched.<ref>{{Cite web |title=CVE - CVE-2017-8373 |url=https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8373 |access-date=2024-02-13 |website=cve.mitre.org}}</ref><ref>{{Cite web |title=CVE - CVE-2017-8374 |url=https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8374 |access-date=2024-02-13 |website=cve.mitre.org}}</ref><ref>{{Cite web |title=CVE - CVE-2017-11552 |url=https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11552 |access-date=2024-02-13 |website=cve.mitre.org}}</ref>

==References== {{Reflist}}

==External links== *[http://www.underbit.com/products/mad/ MAD's home page] *[https://sourceforge.net/projects/mad/ MAD's SourceForge page] *[http://www.chiariglione.org/mpeg/ Official MPEG web site] {{Webarchive|url=https://web.archive.org/web/20081109215716/http://www.chiariglione.org/mpeg/ |date=2008-11-09 }}

Category:Free audio codecs