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Disc Description Protocol
Disc Description Protocol (DDP) is a format for specifying the content of optical discs, including CDs and DVDs. DDP is commonly used for delivery of disc premasters for duplication. DDP is a proprietary format and is the property of DCA. The file format specification is not freely available. The DDP must contain 4 parts:Francis Rumsey, Desktop Audio Technology, 2004, Focal Press # Audio image(s) (.DAT file(s)) # DDP Identifier (DDPID) # DDP Stream descriptor (DDPMS) # Subcode descriptor (PQDESCR) An optional text file, containing the track titles and timings, can also be included. Software Windows PC: *Adobe Encore *Cockos Reaper *DCA Viper *DDP Mastering Tools (command line) *Eclipse Image Encoder *Gear Pro Mastering *HOFA CD Burn & DDP *Magix Sequoia *Merging Pyramix *PreSonus Studio One Professional *SADiE *Sonoris DDP Creator *Steinberg WaveLab macOS: *Triumph Mastering Suite *Adobe EncoreƗ *Audiofile Engineering Triumph (previously Wave Editor) *Audiofile Triumph *Co ...
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Optical Disc
An optical disc is a flat, usuallyNon-circular optical discs exist for fashion purposes; see shaped compact disc. disc-shaped object that stores information in the form of physical variations on its surface that can be read with the aid of a beam of light. Optical discs can be reflective, where the light source and detector are on the same side of the disc, or transmissive, where light shines through the disc to be detected on the other side. Optical discs can store analog information (e.g. LaserDisc), digital information (e.g. DVD), or store on the same disc (e.g. CD Video). Their main uses are the distribution of media and data, and long-term archival. Design and technology The encoding material sits atop a thicker substrate (usually polycarbonate) that makes up the bulk of the disc and forms a dust defocusing layer. The encoding pattern follows a continuous, spiral path covering the entire disc surface and extending from the innermost track to the outermost track ...
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Compact Disc
The compact disc (CD) is a Digital media, digital optical disc data storage format co-developed by Philips and Sony to store and play digital audio recordings. It employs the Compact Disc Digital Audio (CD-DA) standard and was capable of holding of uncompressed stereo audio. First released in Japan in October 1982, the CD was the second optical disc format to reach the market, following the larger LaserDisc (LD). In later years, the technology was adapted for computer data storage as CD-ROM and subsequently expanded into various writable and multimedia formats. , over 200 billion CDs (including audio CDs, CD-ROMs, and CD-Rs) had been sold worldwide. Standard CDs have a diameter of and typically hold up to 74 minutes of audio or approximately of data. This was later regularly extended to 80 minutes or by reducing the spacing between data tracks, with some discs unofficially reaching up to 99 minutes or which falls outside established specifications. Smaller variants, such ...
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Disc Premaster
Disc or disk may refer to: * Disk (mathematics), a two dimensional shape, the interior of a circle * Disk storage * Optical disc * Floppy disk Music * Disc (band), an American experimental music band * ''Disk'' (album), a 1995 EP by Moby Other uses * Disc harrow, a farm implement * Discus throw or disc throw, a track and field event involving a heavy disc * Intervertebral disc, a cartilage between vertebrae * Disk (functional analysis), a subset of a vector space * ''Disc'' (magazine), a British music magazine * Disk, a part of a flower * Disc number, numbers assigned to Inuit by the Government of Canada * Galactic disc, a disc-shaped group of stars Abbreviations * Death-inducing signaling complex * DISC assessment, a group of psychometric tests * Defence Intelligence and Security Centre or Joint Intelligence Training Group, the headquarters of the Defence College of Intelligence and the British Army Intelligence Corps * Delaware Independent School Conference, a high-school ...
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Proprietary Format
A proprietary file format is a file format of a company, organization, or individual that contains data that is ordered and stored according to a particular encoding-scheme, such that the decoding and interpretation of this stored data is easily accomplished only with particular software or hardware that the company itself has developed. In contrast, an open or free format is a file format that is published and free to be used by everybody. Some proprietary format may be documented by the developer and released with a note that the format is subject to change without notice, and that the file should only be read or written with libraries provided by the developer. In other cases, the specification of the data encoding format may not be publicly documented at all; in some cases, the format may only be released to those who have signed non-disclosure agreements. A proprietary format can also be a file format whose encoding is in fact published but is restricted through licenses such ...
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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 wit"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'' CD-DA lacks. The PreMaster CD format made use of the fact that not all data-recording surfaces are specified for use in the ''Red Book'' CD-DA or ''Yellow Book'' CD-ROM standards. CD transports were not able to recover the data hidden in the Cue Sheet unless commanded 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 ISRC Codes, per disc UPC/ EAN, etc. (see Compact Disc subcode). Despite claims to the contrary, only Sonic Solutions' "Sonic System" software was ...
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