cn9601 Posted September 20, 2007 Posted September 20, 2007 I have read that for normal DVD audio, ie. DTS/DD 5.1, there is a 1% or 0.1% audio loss when using HDMI. There are people recommending to use the usual digital (optical or coaxial). Therefore, it is good to have HDMI and Digital interconnects to the AVR. Please clarify. PS: For HD audio, it is only HDMI.
yellowhandman Posted September 20, 2007 Posted September 20, 2007 I have read that for normal DVD audio, ie. DTS/DD 5.1, there is a 1% or 0.1% audio loss when using HDMI. There are people recommending to use the usual digital (optical or coaxial). Therefore, it is good to have HDMI and Digital interconnects to the AVR. Please clarify. PS: For HD audio, it is only HDMI. i really doubt anyone can hear the difference of 1%! for me, the convenience of having one less cable is worth the 1% anyway. plus HD audio is the future.
Phil1624705739 Posted September 20, 2007 Posted September 20, 2007 You mean loss in volume? Anyway, digital is all about 1 and 0 and there's inbuilt error correction to address noise and interference. Phil
cn9601 Posted September 20, 2007 Author Posted September 20, 2007 For learning purpose, so it is true that as far as 5.1 concerned, HDMI is inferior than digital (optical or coaxial) ? This is where I am confused because, as highlighted, HDMI is also digital right. Is it due to the skin factor ???
zapp1624705742 Posted September 20, 2007 Posted September 20, 2007 TS- where did u read that article from? Can share??
cn9601 Posted September 20, 2007 Author Posted September 20, 2007 TS- where did u read that article from? Can share?? It's from another AV forum. It catches my attention, so immeditately wanting to clarify with Bros here ::)
zapp1624705742 Posted September 20, 2007 Posted September 20, 2007 so no testing or results shown? I find the reasoning weird cos HDMI is meant to be able to take high bandwidths and therefore should theoretically be able transmit DD5.1 or DTS without any loss whatsoever even along side video data...
darkeststar Posted September 20, 2007 Posted September 20, 2007 For learning purpose, so it is true that as far as 5.1 concerned, HDMI is inferior than digital (optical or coaxial) ? This is where I am confused because, as highlighted, HDMI is also digital right. Is it due to the skin factor ??? Hi, i did come across similar opinions on Jap HT magazine too. The Japanese reviewers stated that thru co-ax, the sound came out fuller, with more details, compared to HDMI. They were reviewing AV receivers.
Doggie Howser Posted September 20, 2007 Posted September 20, 2007 I haven't read anything to this effect BUT here are some possible reasons for such a perception: a. older HDMI/analog 5.1 receivers don't do the LFE correction (add 10dB to the LFE input) and the results end up with a less than impressive bass. By using DD5.1/DTS over optical/coax, the decoding is done by the amp and the amp automatically adds the 10dB to the LFE. This is not an issue with HDMI per se, but more to do with bad AV receiver design. b. Bass Management: some amps can perform bass management after decoding the DD 5.1/DTS optical/coax signal but due to design issues are unable to on HDMI signals. This may create the "impression" again that the optical/coax signal sounds better. Again, this is nothing intrinsically wrong with the HDMI signal. Just a bad AV receiver design again. The other issue as Phil mentioned is that I find MPCM sounds "softer" than my decoded DTS/DD optical signal. Once you normalize the levels, they should sound the same. Can you link to the article/posts?
cn9601 Posted September 20, 2007 Author Posted September 20, 2007 Can you link to the article/posts? It is a post by Spudsy: http://www.avforums.com/forums/showthread.php?t=623937 ;D I have a post in it oso. Bros are very welcome for sharing your thoughts for my post. a. This is not an issue with HDMI per se, but more to do with bad AV receiver design. b. Just a bad AV receiver design again. This is VERY true, if I compare bet Onky 875 and Yammy 995. I would have thought it is standard issue tat 0.1LFE or Bass is lost for SACD, which is the Xperience on Yammy. But then now having to channel SACD thru Onky 875, it is COMPLETE and FULL, and I even have to lower slightly the 0.1LFE level :o
Doggie Howser Posted September 20, 2007 Posted September 20, 2007 It is a post by Spudsy: http://www.avforums.com/forums/showthread.php?t=623937 I have NO IDEA what he is on about. He seems confused and thinks HDMI is not a digital interface.
SiriuslyCold Posted September 20, 2007 Posted September 20, 2007 ya , and Spudsy had no reference/link for that 1% audio loss either
Knight_Rider Posted September 20, 2007 Posted September 20, 2007 Hi, i did come across similar opinions on Jap HT magazine too. The Japanese reviewers stated that thru co-ax, the sound came out fuller, with more details, compared to HDMI. They were reviewing AV receivers. Can HD Audio (DTS-HD /DD TrueHD) passthrough coax??
Knight_Rider Posted September 20, 2007 Posted September 20, 2007 Precisely end of discussion. ;D There was nothing to argue anyway because the futher is HD and HDMI. :P
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