HDCD Decoder Reply #275 – 2011-12-16 15:37:21 My apologies in advance that the following is just as much questions on HDCD itself than of the component. Two brief component-specific inquiries first: (1) How do I apply the info tags? (2) There is no way to export info from report window? (Oh, by the way, it seems that quite some info given during these 11 pages, has changed along the way? Found the thread hard to read ... so hard I would volunteer to write a FAQ had I had any clue on the facts.)So, I did a few years ago convert a lot of my (HD)CD rips into 24-bits using hdcd.exe before I was aware that decoding could be done on-the-fly. Now having scanned my entire lossless collection, I do have a few questions on the output (I used the current-as-of-today version 1.14), and then a few on interpreting data from my 24-bits files: * I have a couple of CDs and at least one isolated track -- which report minimum gain = 0, maximum gain = 0, PE enabled and transient filter "Intermittent". Now I have no idea what the latter means, but is it so that the plugin does nothing about the transient filter at all (apart from detecting)? Various internet sources claim that no software decoder does. * Quite a few of the HDCD tracks (including entire discs) have minimum gain = maximum gain = 0 dB, and both features reported to be "Disabled". These are the ones which have only been touched by a HDCD-enabled device, but not used any of the features? I.e., these should be regarded a "non-HDCD with extra noise in the LSB"? (And the plugin does so, when I have checked volume reduction to be applied only when P.E. enabled, right?)* I found a CD where all tracks except one report gain 0, T.F. disabled, P.E. enabled -- and the exceptional track #2 reporting peak extension as "Intermittent". I can only guess that the entire CD is supposed to be treated equal? Or? How does the plugin react?* There seems to be some difference between the component and the hdcd.exe utility, as one track which was skipped by the latter, was identified by foo_hdcd -- this on a CD which both of them agree, has both HDCD and non-HDCD tracks.Then the 24 bits tracks: * There are a few which peak at .5 or slightly below. Is this due to hdcd having halved volume on discs with no peak extension? Would these have been better off not coded over to 24 bits?* Are there other values to look out for? (There are quite a few close to the square root of .5). Other signs so? For example, while peak scan shows that one end of the bitword is unused, is there any easy scan which will reveal it if the other end is unused?