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Originally Posted by Katsunami
True. A 16-bit CD has a dynamic range of 96 dB; because 16 x 6 dB = 96 dB.
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Correct. (At least in theory - in practice, theoretical maxima are rarely achieved
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I'm not knowledgeable enough to discuss this subject on a highly technical level. I do think, however, that 24 bits x 6 dB = 144 dB is enough to render you deaf if the dynamic range of 24 bit would be fully used to create the loudest music possible.
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The point is that, because the dynamic range in question is the *ratio* between the loudest and quietest sounds available, the enhanced dynamic range doesn't have to be used to make the loudest sound louder, you can instead use it to allow you to lower the threshold where quiet sounds disappear into the quantisation noise floor. (And, more generally, reduce the level of quantisation noise throughout).
dBs of dynamic range are not to be confused with sound pressure dBs - they're both ratios, but ratios of different things. Just because a source has 144dB of DR, it doesn't mean you have to play it at 144 dB of sound pressure level (which would indeed damage your ears)!
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Same as with RAW pictures from a camera
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Exactly
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/JB