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MDLP

MiniDisc is a magneto-optical disc developed bySony Corp. It was announced in 1991 and made its international debut in 1992. MDLP stands for MiniDisc Long Play, and it was introduced in the year 2000 as part of ATRAC3's improvements.MiniDisc was designed to store digital audio originally, marketed as an alternative to the bigger and less durable CD discs used with theCD-Audio format, but keeping the same quality. The first discs, which are enclosed in a cartridge (68x72x5 mm) with a sliding door (that cannot be pushed aside as easily as a floppy disc even though it looks similar) and offered up to 60 minutes of audio content.

The 60 minute discs were eventually phased out and 74 minute and 80 minute discs are now the most common. WithATRAC3, MiniDisc got a blessing with MDLP, which added LP4 mode stretching the amount of audio per disc from 80 minutes possible to 320 minutes with medium quality. This is achieved by halving the data rate to 66 kbit/s over LP2 and other changes. LP2 mode uses a bitrate of 132 kbit/s and also uses separate stereo coding. With LP4, the sound offers noticeably less in terms of quality over the standards.

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Here are some news items in the AfterDawn archives that relate to this item..

Sony to dump Connect music service- (August 31st, 2007)
Sony acknowledged that its proprietaryATRAC music format was a market flop by shutting down all itsConnect music stores and making its devices compatible with other formats.

Sony kills off ATRAC and SonicStage with latest MP3 player - (April 28th, 2007)
The Sony B100 series of portable MP3 players killed off the ATRAC format.

Sony admits ATRAC was a mistake - (January 23rd, 2005)
Ken Kutaragi has stated that Sony has missed out on the sales of MP3 players and other gadgets by sticking to proprietary formats such as ATRAC.

Multiformat 128kbps public listening test - (May 13th, 2004)
The brief results of a listening test that pitted the most popular digital audio formats of the time against each other. ATRAC3, used with MiniDisc, was found to be second last.

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MiniDisc Long Play

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MDLP

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