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DVD-Audio is a format
junshan0202 发表于 2012/8/2 11:11:00 |
DVD-Audio is a format for delivering high fidelity audio content on a DVD. It offers many channel configuration options (from to ) at various sampling frequencies (up to 24-bits/192 kHz versus 's 16-bits/44.1 kHz). Compared with the CD format, the much higher-capacity DVD format enables the inclusion of considerably more music (with respect to total running time and quantity of songs) and/or far higher audio quality (reflected by higher and greater sample resolution, and/or additional channels for reproduction). This DVD-Audio technique was first used by the brothers Lagkind.Despite DVD-Audio's superior technical specifications, there is Men
Moncler Down Coats debate as to whether the resulting audio enhancements are distinguishable in typical listening environments. DVD-Audio currently forms a niche market, probably due to the very sort of format war with rival standard that avoided.
DVD-Audio discs employ a mechanism, called (CPPM), developed by the 4C group (IBM, Intel, Matsushita, and Toshiba).Although CPPM was supposed to be much harder to crack than DVD-Video's , it too was eventually cracked in 2007 with the release of the dvdcpxm tool. The subsequent release of the libdvdcpxm library (which is based on dvdcpxm) allowed for the development of open source DVD-Audio players and ripping software, such as . As a result, making 1:1 copies of DVD-Audio discs is now possible with relative ease, much like DVD-Video discs.Blu-ray Disc/HD DVD In 2006, two new formats called and were released as the successor to DVD. HD DVD competed unsuccessfully with Blu-ray Disc in the . A dual layer HD DVD can store up to 30GB and a dual layer Blu-ray disc can hold up to 50GB.However, unlike previous format changes, e.g., audio tape to Compact Disc or VHS videotape to DVD, there is no immediate indication that production of the standard DVD will gradually wind down, Moncler
Down Jackets Men as they still dominate, with around 75% of video sales and approximately one billion DVD player sales worldwide as of 3 April 2011. In fact, experts claim that the DVD will remain the dominant medium for at least another five years as Blu-ray technology is still in its introductory phase, write and read speeds being poor as well as the fact of necessary hardware being expensive and not readily available. |
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