max123_ind
Active Member
I have shamelessly copied (Ctrl-C + Ctrl+V) this article from HighDefDigest ... the whole article is pasted here for saving your time.
Here's link..
hXXp://www.highdefdigest.com/news/show/Joshua_Zyber/HD_Advisor/HD_Advisor_Limit_65/5001
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What Happened to Dolby TrueHD???????????//
Q: Having upgraded my system to take full advantage of the lossless codecs from Dolby and DTS, it's been somewhat disheartening to see the number of titles available in Dolby TrueHD slow to little more than a trickle in 2010. Can we expect to see more Dolby TrueHD titles in the future or has DTS-HD Master Audio become the de facto standard for Blu-ray? Also, what is the likelihood of seeing both TrueHD and DTS-HD Master Audio as options on a single Blu-ray disc?
A: It's true that there does seem to be a trend in recent months for home video studios to move away from Dolby TrueHD and toward DTS-HD Master Audio. TrueHD isn't completely being phased out, but the momentum in the market is with DTS.
I suspect that this primarily has to do with the core+extension design of DTS-HD Master Audio, which incorporates a backwards compatible standard DTS soundtrack integrated as a "core" within the audio signal. Hardware not compatible with the full lossless sound format can simply ignore the MA extension and only read the core. This means that the studio only has to author one soundtrack on the disc for all purposes. Dolby TrueHD, on the other hand, requires that a separate backwards compatible DD 5.1 soundtrack must be added to the disc along with the lossless TrueHD track. (Sometimes it's "hidden," so you may not see it listed in the disc menus; but the player will fall back to it if your equipment doesn't support TrueHD.)
This isn't to say that one lossless format is better than the other. The end result of either is the same bit-for-bit identical copy of the studio master. However, for backwards compatibility purposes, DTS-HD Master Audio may be more convenient. The lossy DTS core also tends to offer a higher level of fidelity than DD 5.1 for those listeners who can't take advantage of the full lossless track.
As far as I'm aware, only two movie discs have been authored with both Dolby TrueHD and DTS-HD Master Audio options: 'Close Encounters of the Third Kind' and 'Top Gun'. In the case of 'Top Gun', the two tracks come from different sound mixes. The DTS version was remixed for 6.1, while the TrueHD version is an older 5.1 mix. However, other than isolated examples like this, there is little reason for any Blu-ray to be authored with both lossless formats. TrueHD and Master Audio produce identical results. Lossless is lossless. The inclusion of both is just a waste of disc space that could be better utilized for other purposes, such as including bonus features or increasing the video bit rate.
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Here's link..
hXXp://www.highdefdigest.com/news/show/Joshua_Zyber/HD_Advisor/HD_Advisor_Limit_65/5001
----------------------------------------------------------
What Happened to Dolby TrueHD???????????//
Q: Having upgraded my system to take full advantage of the lossless codecs from Dolby and DTS, it's been somewhat disheartening to see the number of titles available in Dolby TrueHD slow to little more than a trickle in 2010. Can we expect to see more Dolby TrueHD titles in the future or has DTS-HD Master Audio become the de facto standard for Blu-ray? Also, what is the likelihood of seeing both TrueHD and DTS-HD Master Audio as options on a single Blu-ray disc?
A: It's true that there does seem to be a trend in recent months for home video studios to move away from Dolby TrueHD and toward DTS-HD Master Audio. TrueHD isn't completely being phased out, but the momentum in the market is with DTS.
I suspect that this primarily has to do with the core+extension design of DTS-HD Master Audio, which incorporates a backwards compatible standard DTS soundtrack integrated as a "core" within the audio signal. Hardware not compatible with the full lossless sound format can simply ignore the MA extension and only read the core. This means that the studio only has to author one soundtrack on the disc for all purposes. Dolby TrueHD, on the other hand, requires that a separate backwards compatible DD 5.1 soundtrack must be added to the disc along with the lossless TrueHD track. (Sometimes it's "hidden," so you may not see it listed in the disc menus; but the player will fall back to it if your equipment doesn't support TrueHD.)
This isn't to say that one lossless format is better than the other. The end result of either is the same bit-for-bit identical copy of the studio master. However, for backwards compatibility purposes, DTS-HD Master Audio may be more convenient. The lossy DTS core also tends to offer a higher level of fidelity than DD 5.1 for those listeners who can't take advantage of the full lossless track.
As far as I'm aware, only two movie discs have been authored with both Dolby TrueHD and DTS-HD Master Audio options: 'Close Encounters of the Third Kind' and 'Top Gun'. In the case of 'Top Gun', the two tracks come from different sound mixes. The DTS version was remixed for 6.1, while the TrueHD version is an older 5.1 mix. However, other than isolated examples like this, there is little reason for any Blu-ray to be authored with both lossless formats. TrueHD and Master Audio produce identical results. Lossless is lossless. The inclusion of both is just a waste of disc space that could be better utilized for other purposes, such as including bonus features or increasing the video bit rate.
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