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Musepack (formerly MPEGplus, MPEG+, MP+)
Filename extension
Internet media type
Magic numberMPCK, MP+
Latest release
Type of formatAudio
Contained byMKA/MKV, NUT
Extended fromMP2
Open format?LGPL, BSD license

MPC Maid ('MM') is a software editor for the Akai MPC 500, MPC 1000, and MPC 2500. It is Mac, PC, and Linux-compliant and makes the edition of MPC programs files easy. It also features a semi-automatic slicing tool to chop loops into slices. Media Player Classic is not available for Mac but there are plenty of alternatives that runs on macOS with similar functionality. The most popular Mac alternative is VLC Media Player, which is both free and Open Source.If that doesn't suit you, our users have ranked more than 100 alternatives to Media Player Classic and many of them are available for Mac so hopefully you can find a suitable. MPC for Windows MPC for Linux MPC for Mac OS X Source Code/Lib SVN Repository Trac/Wiki. Please donate to the Nepal Earthquake Children's Relief Fund. Recent inquiries about audio player options available to.

Musepack or MPC is an open sourcelossy audio codec, specifically optimized for transparent compression of stereo audio at bitrates of 160–180 (manual set allows bitrates up to 320) kbit/s. It was formerly known as MPEGplus, MPEG+ or MP+.

Development of MPC was initiated in 1997 by Andree Buschmann and later assumed by Frank Klemm, and as of 2004 is maintained by the Musepack Development Team (MDT) with assistance from Buschmann and Klemm. Encoders and decoders are available for Microsoft Windows, Linux and Mac OS X, and plugins for several third-party media players available from the Musepack website, licensed under the GNU Lesser General Public License (LGPL) or BSD licenses, and an extensive list of programs supporting the format.[1]

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Technical details[edit]

Musepack was developed using the MP2 codec as a starting point, but many features have since been added, including:

  • subband selectable M/S encoding (as in AAC)
  • Huffman coding (as in MP3 and AAC, but more efficient). Since SV8 the bitstream is compressed by highly optimized canonical huffman tables that yields 2% smaller files and faster decoding
  • noise substitution techniques (as in ATSC A-52 and MPEG-4 AAC V2)
  • pure variable bitrate between 0 and 1300 kbit/s (when needed)

The psychoacoustic model of MPC is based on MPEG ISO model 2, but is extended by CVD (clear voice detection). The quantization algorithm of the MPC encoder performs spectral shaping of the noise, called adaptive noise shaping (ANS), in order to overcome the low frequency resolution of the polyphase quadrature filter bands.

MPC uses the APEv2 tagmetadata container.[2]

Musepack is mainly optimized for transparent encoding at the '--standard' preset (175-185 kbit/s). Very few optimisations have been made at lower bitrates (like 128 kbit/s). Nevertheless, various listening tests have been conducted in which Musepack has performed well at both lower and higher bitrates.[3][4]


  • Container-independent format. An SV8 MPC is a container file for a Musepack stream. Raw stream encoding is possible.
  • Packetized stream allows muxing into audio and video containers (e.g. MKA/MKV, NUT).
  • Sample-accurate, fast seeking independent of file length.
  • Sample-accurate cutting. Application included in download package (mpccut) allows losslessly cutting stream segments based on selected start/end samples.
  • Chapters. Chapter editor (mpcchap) included, for embedding chapters into MPC files.
  • No internal clipping.
  • Streamable.

Test results[edit]

Despite being optimized for 100% transparency at moderately high bitrates, MPC has also scored highly on many 128 kbit/s tests. In May 2004, a series of double-blind listening tests[5] (as reported on Slashdot[6]) suggested that Musepack and Ogg Vorbis (which was the 1.1 'aoTuV' fork at the time) were the two best available codecs for high-quality audio compression at bitrates around 128kbit/s, beating MP3, AAC, WMA, and ATRAC.

Listening tests of MPC:

  • 2004 – rjamorim's second 128 kbit/s group listening test – between 14 and 27 listeners. MPC and Vorbis tied for first.[5]
  • 2003 – rjamorim's first 128 kbit/s group listening test – between 14 and 29 listeners. AAC, MPC, Vorbis, and WMA tied for first.[7]
  • 2002 – ff123's second 128 kbit/s group listening test[8]
  • 2001 – ff123's 128 kbit/s group listening test[9]

Hardware and software support[edit]

Devices supporting The Core Pocket Media Player can play MPC. This includes devices running Palm OS, Symbian OS, Windows, Windows CE and Windows Mobile (Pocket PC). All devices with software audio decoding that are supported by Rockbox, including older revisions of iPod, can also play Musepack files. Playback on Roku Photobridge HD is supported with a plugin.There is a plethora of media players for Android supporting Musepack (among them is the ported Rockbox media player).

Musepack distributes the libmpcdec library for decoding MPC content. Various plugins have been developed, using that library, including for the XMMS player (on Unix). Asunder and Jack! The Knife allows ripping Audio CD tracks directly into Musepack files.

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  1. ^'Source Code/Libs'. musepack.net. Retrieved 27 August 2010.
  2. ^'SV8 specification'. Musepack.net. 2009-02-24. Retrieved 2020-02-14.
  3. ^'Audio quality of encoders at 128 kbit/s'. Soundexpert.org. Retrieved 2011-04-25.
  4. ^'MPC vs OGG VORBIS vs MP3 at 175 kbps, listening test on non-killer samples'. Audiotests.free.fr. Archived from the original on 2011-07-19. Retrieved 2011-04-25.
  5. ^ ab'Results of Multiformat at 128kbit/s Listening Test'. Listening-tests.freetzi.com. Retrieved 2011-10-04.
  6. ^'Vorbis And Musepack Win 128kbps Multiformat Test'. Slashdot. 2004-05-24. Retrieved 2011-04-25.
  7. ^'Results of 128kbit/s Extension Listening Test'. Listening-tests.freetzi.com. Retrieved 2011-10-04.
  8. ^'128 kbit/s Blind Listening Tests'. Ff123.net. Archived from the original on 2011-05-17. Retrieved 2011-04-25.
  9. ^'Group Listening Tests of Various Formats at 128 kbit/s'. Ff123.net. Archived from the original on 2011-05-17. Retrieved 2011-04-25.

External links[edit]

  • Official website
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Musepack&oldid=950150207'
MPC 1000 DownloadsAdmin Support
Get MPC 1000 Loading instructions, MPC 1000 operating systems, MPC 1000 Manuals and more.
Utilities to download GN Sounds, GN Manuals, & MPC Manuals in .PDF format. Also download accelerator programs to resume large file size downloads.
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Not sure how GN’s Sound Collections work? Check the GN MPC 1000 Loading Instructions and if you still have questions, feel free to contact us.
MPC 1000 Loading Instructions:


The Akai MPC 1000 Ram upgrade can be done in a couple ways. Either get the Akai EXM128 MPC 1000 upgrade which will work for the MPC 1000 & the MPC 2500 or get 256MB PC 133 144PIN CL3 SODIMM Laptop Ram. Hynix and Kingston is recommended. However, any type Ram will work.
The Unofficial JJ Operating System improves the MPC 1000, introduces many new features and ease of use operation over akai’s operating system. This OS is a one-time fee of $30 with free upgrades Visit the Unofficial JJ Operating System for current updates and the Unofficial JJ OS forum for info & support of this OS. You can also Purchase the JJ OS to get the password to save. The manual is included with instructions on how to load the OS and use it. Feature list included.

NOTE: Download the GN Background image for this new OS. Just copy the mpc1000.bmp to the compact flash card and it will become your bootup pic!

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MPC 1000 OS 2.10 – MPC 1000 Operating System 2.10
How to update the MPC1000 Operating System
MPC1000 Operating System 2.10: MPC1000 OS Release Notes:
MPC 1000 Version 2 Operators Manual & the MPC 1000 Version 2 Quickstart Manual.
V2 Operators Manual: V2 QuickStart:

MPC 1000 Operating System 1.07

MPC 1000 OS 1.07 – MPC1000 Operating System 1.07
MPC 1000 Operating System 1.07:
MPC 1000 Operators Manual & the MPC1000 Quickstart Manual.
Operators Manual (903kb): QuickStart (103kb):

Bass Vol.1&2 Documentation

Get the patch names and starting note numbers per pad bank associated with the Bass Samples.
Bass Samples Vol.1Bass Samples Vol.2
Get the patch names and starting note numbers per pad bank associated with the Hip Hop Guitar Samples.
Hip Hop Guitar Samples Vol.1Hip Hop Guitar Samples Vol.2

String Samples Vol.1&2 Documentation

Get the patch names and starting note numbers per pad bank associated with the String Samples.
String Samples Vol.1String Samples Vol.2

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Get the patch names and starting note numbers per pad bank associated with the Horn Samples.
Horn Samples Vol.1Horn Samples Vol.2

Utilities – Get Current Utilities and Downloads

Winzip 9.0 – You’ll need Winzip to open all compressed files & docs for a PC. Get Winzip (2.3Mb):

Aladdin Stuffit Expander 8.5 – You’ll need Stuffit to open all compressed files & documentation for a MAC. Stuffit Expander will also open .zip files from PC. Get Stuffit (11.7Mb ):

Adober Acrobat Reader 6.0 – You’ll need Acrobat Reader to view all GN & Triton Manuals. PC (420kb) MAC (972kb)

GetRight & Download Accelerator – For Dial-Up Users, we recommend using GetRight or Download Accelerator to resume large file size downloads.
More info on Download Accelerator HERE.
More info on Get Right HERE.

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