PMCD


PMCD

PMCD (PreMaster CD) is a specially formatted, recordable Compact Disc designed to be sent to a CD pressing plant for replication. The PreMaster CD format, developed in the early 1990s by the CD-ROM division of Sony, in cooperation with [http://www.startlab.co.jp "START Lab Inc."] of Tokyo and Sonic Solutions, contained a hidden “PreMaster Cue Sheet” that held the metadata needed for replication that a Red Book-formatted Compact Disc lacks. The PreMaster CD format made use of the fact that not all data-recording surfaces are specified for use in the Red Book or Yellow Book standards. CD transports were not able to recover the data hidden in the Cue Sheet unless forced to by proprietary software. The Cue Sheet specified a broad range of metadata, including number of channels, per track pre-emphasis status, per track copy protection bit setting, per track ISR Codes, per disc UPC/EAN, etc.

Despite claims to the contrary, only Sonic Solutions’ “Sonic System” software was able to generate PreMaster CD discs. PMCDs were subsequently obsoleted by the more modern and generalized DDP specification. Several factors led to the decline of the PreMaster CD standard. First, the CD-R mechanisms that were able to read and write the hidden cue sheet metadata went out of production in the late 1990’s. Second, only Laser Beam Recorders or LBRs manufactured by Sony were able to read PMCD discs, which limited the formats adoption by replicators.

Many CD replicators now accept regular CD-R discs in place of true PMCDs, which can be created using specialized Audio CD pre-mastering software. Unfortunately, CD-Rs formatted as “Audio CDs,” which really are Red Book-formatted Orange Book discs, are not designed for disc replication, only content distribution. The audio data on these discs is not error protected so, any corruption of the audio data during readout due to dirt or mechanical damage results in total loss of the audio data. Modern, professional pre-mastering software relies on the DDP format, which protects both the audio data and its associated metadata.

External links

* [http://www.sonicstudio.com/products/pmcd/pmcd01.html "PreMaster CD"] and [http://www.sonicstudio.com/products/sb/soundblade01.html "soundBlade"] , software from Sonic Studio, are the direct descendants of the original Sonic System from Sonic Solutions.
*A 1992 [http://www.sonicstudio.com/pdf/papers/Tech_Memo_92-001.pdf technical memorandum] provides details concerning the PreMaster Cue Sheet.


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • PMCD — Program Manager for Chemical Demilitarization (Governmental » Military) …   Abbreviations dictionary

  • PMCD — Part Material Control Document Contributor: GSFC …   NASA Acronyms

  • Мастеринг — (англ. mastering) в широком смысле процесс производства чего либо, в ходе которого из исходных материалов создаётся экземпляр продукта, который является при тиражировании эталонным, и потому называется также мастер копией. Мастеринг… …   Википедия

  • United States Army Chemical Materials Agency — The U.S. Army Chemical Materials Agency [http://www.cma.army.mil/home.aspx] ( CMA ) is a United States Army organization originally chartered with both the storage and the disposal at all nine of the USA s chemical weapons stockpile locations.… …   Wikipedia

  • Mastering engineer — A mastering engineer is one skilled in the practice of taking audio (typically musical content) that has been previously mixed in either the analog or digital domain as mono, stereo, or multichannel formats and preparing it for use in… …   Wikipedia

  • Renfrew — infobox UK place country = Scotland country= Scotland static static image caption= Renfrew s location locally and nationally. official name= Renfrew gaelic name= Rinn Friù scots name= os grid reference= NS519186 latitude=55.86666 longitude=… …   Wikipedia

  • Claude Pascal — est un compositeur français né à Paris en 1921. Après de brillantes études au Conservatoire de Paris, il obtint en 1945 un Premier grand Prix de Rome de composition musicale et consacra l essentiel de son existence à la création de très… …   Wikipédia en Français


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.