HDCD format

dcathro · Mar 9, 2006

oedipus said:

There are too few bits on the disk, and the number of bits passing under the laser per second is too small for 20 bit resolution. You'd need to cut the play time of the disk by 20% and spin the disk 25% faster.

What you might be refering to is that, through noise shaping, HDCD can perceptually get 20 bits of resolution.

HDCD is nothing special as this level of perceptual resolution is achievable with standard CD's which have been properly dithered.
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I have to say Oedipus, that I agree with everything single thing you have said in this thread.

I personally don't like HDCD. It is not standard Redbook, and although HDCD encoded discs will play on standard (non HDCD decoding) CD players, they do not sound right.

I-S · Mar 9, 2006

oedipus - I had not heard that before, and so looked it up...

You're correct (of course). And dcathro may well be also... the LSB is used as a control signal, so HDCDs played in a non-HDCD player are only 15 bit resolution.

That suggests that were I to repeat the HDCD vs non-HDCD version test on a non-HDCD player, the result should be reversed assuming the player to have low enough jitter to resolve that last bit.

HDCD format

dcathro

I-S Good Evening.... Infidel

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HDCD format

dcathro

I-S Good Evening.... Infidel

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