CDs have digital flags, to indicate the presence of absence, of pre emphasis. There are also digital flags, to tell players that can detect them, that a file is MQA or HDCD, which also means, they are not officially compact disc.
I think this may also exist for some other later "20 bit" formats too. They may be backward compatible with regular CD, but probably aren't supposed to use the logo.
My question is, have any of the folks that encoded various quad matrix formats,(onto what are otherwise stereo Compact Discs) figured out a way to (digitally) tell the decoder or player that the file or disc is so encoded?? Or is the only indication the labeling on the jewel case and disc itself? I think the answer is no, but if there is a different answer, I am sure someone here would know about it.
I think this may also exist for some other later "20 bit" formats too. They may be backward compatible with regular CD, but probably aren't supposed to use the logo.
My question is, have any of the folks that encoded various quad matrix formats,(onto what are otherwise stereo Compact Discs) figured out a way to (digitally) tell the decoder or player that the file or disc is so encoded?? Or is the only indication the labeling on the jewel case and disc itself? I think the answer is no, but if there is a different answer, I am sure someone here would know about it.