It must be recognised that in 1980 specific storage capacity was orders of magnitude less than it is today. The Red Book CD spec was practical, not theoretical. It was based on the maximum amount of data that would fit on the chosen silver disc, the Nyquist equation and an 80 minute run-time to allow Beethoven's Ninth to fit. This gave rise to the 16 bit 44.1k standard. Not chosen at all for sound quality, just what would fit. No wonder it can sound very poor, and universally did in 1983, before any of the shortcomings below started to be addressed.
After 40 years trying, it would appear clock, quantisation, dither, AD converter problems etc will never be solved. That means all digital necessarily suffers from false timing, rhythm, dwell artifacts and the widely recognised 'unreal' sound, whatever the information density. But, properly implemented, more density certainly helps hide these.
But for the CD: 'Perfect sound for ever'? No.
After 40 years trying, it would appear clock, quantisation, dither, AD converter problems etc will never be solved. That means all digital necessarily suffers from false timing, rhythm, dwell artifacts and the widely recognised 'unreal' sound, whatever the information density. But, properly implemented, more density certainly helps hide these.
But for the CD: 'Perfect sound for ever'? No.