What's the difference between DTS-HD and DTS-HD Master Audio - AVS Forum
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post #1 of 9 Old 04-30-2007, 01:54 AM - Thread Starter
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Someone said that the DTS-HD is compressed and the DTS-HD Master Audio is uncompressed. What's more, the icons of the DTS-HD and DTS-HD Master Audio are different, is there anyone could tell me the difference between them? Thx a lot.
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post #2 of 9 Old 04-30-2007, 02:15 AM
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Both codecs are compressed. DTS-HD HR is lossy, whereas DTS-HD MA is lossless. Not many people are going to be able to tell you the general audible difference between the two, because no hardware player currently decodes the lossless layer of DTS-HD MA tracks.

Here's more info on the two codecs and how they are specified for the Blu-Ray and HD DVD formats. Logos are also shown on this page.
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post #3 of 9 Old 04-30-2007, 07:44 AM
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Both codecs are compressed and loseless. The only difference is the bitrate. The current maximum bitrate of DTS-HD MA for blu-ray is 24.5Mbps while DTS-HD for blu-ray is 6Mbps.


DTS HD HR is lossless? Doesn't sound right.

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post #4 of 9 Old 04-30-2007, 07:46 AM - Thread Starter
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Thanks so much, you both had made me more clearly about the two codes.
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post #5 of 9 Old 04-30-2007, 07:50 AM
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what about dts-hr core? is that the same as dts-hd?
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post #6 of 9 Old 04-30-2007, 08:59 AM
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Quote:
Originally Posted by Jack Gilvey View Post

DTS HD HR is lossless? Doesn't sound right.

You're right. DTS HD looks like lossy after I calculated the true bitrate which should be 18M or more to be loseless.-_-.
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post #7 of 9 Old 04-30-2007, 09:14 AM
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Quote:
Originally Posted by MSmith83 View Post

Both codecs are compressed and loseless. The only difference is the bitrate.

This is incorrect. DTS-HD HR is lossy, but it supports a higher maximum bitrate than standard DTS (1.5Mbps vs. 3Mbps~HD-DVD or 6Mbpd~BD) and supports up to 7.1 channels instead of "only" 6.1(DTS-ES).
DTS-HD MA is effectively uncompessed but uses a 2:1 data compession ratio along with metadata to allow the signal to be uncompressed during decoding. This method achieves identical results to that of LPCM but at half the bitrate, and is practically identical to the methods used for DD TrueHD and MLP on DVD-A.

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post #8 of 9 Old 04-30-2007, 12:56 PM
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Quote:
Originally Posted by dicey View Post

This is incorrect. DTS-HD HR is lossy, but it supports a higher maximum bitrate than standard DTS (1.5Mbps vs. 3Mbps~HD-DVD or 6Mbpd~BD) and supports up to 7.1 channels instead of "only" 6.1(DTS-ES).
DTS-HD MA is effectively uncompessed but uses a 2:1 data compession ratio along with metadata to allow the signal to be uncompressed during decoding. This method achieves identical results to that of LPCM but at half the bitrate, and is practically identical to the methods used for DD TrueHD and MLP on DVD-A.

Why in the hell did you quote me on this? Look at my post. I clearly stated that DTS-HD HR is lossy. Don't put words in my mouth. The other poster got that information from somewhere else.
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post #9 of 9 Old 04-30-2007, 02:31 PM
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D'oh!

We all f**k up every now and then! Sorry, bro. Since both your comment and the mystery quote start with the same words, I just assumed that it came from you. But guess what, this time I just made an 'ass' out of 'me'!

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