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comipa
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加入日期: Jul 2001
文章: 557
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作者lienly
don't know how to calculate.

if you have DD TrueHD demo, you can get even >10Mbps! now my disc is at friend's home....


Just calculate "sample rate x resolution x channels" for uncompressed PCM format. and since TrueHD is compressed, it should be < the above result.

http://en.wikipedia.org/wiki/Dolby_TrueHD

According to Wiki, TrueHD itself is capable to carry 14 channel @ 192kHz/24bits. But on BD/HDDVD, it can carry only 8, the encoded bitrate is 18 Mbps. True HD uses MLP compressed format.

So we can estimate it as 8 x 192 x 24 = 36.8Mbps.

http://en.wikipedia.org/wiki/Meridian_Lossless_Packing
Again, according to Wiki, the MLP can provide about 2:1 compression rate.
So the final result became 18Mbps, just the same as the spec.
舊 2008-01-18, 08:39 AM #4
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