I think the key here has been touched on, but not singled out: time-domain transient distortion, more important the higher in frequency the transient is. Early ways of dealing with it on straight CD's were filters that sacrificed high-frequencies to eliminate pre-ringing, but nevertheless sounded better (eg. more less "CD sound"). The introduction of high-res and upsampling solved this problem in a different way. The spread of upsampling throughout the production chain has now made remastered CD's and modern CD's sound much better than the earlier ones.
The pre-ringing does not exist in nature. The sensitivity of our hearing in sorting out "non-natural" sounds in context has been known for years, and this has made me wonder for thirty-five years why "objectivists" and "scientists' were so fervent in denying the claims of analog folk that analog sounded better. I remember sending John Atkinson a letter back in the '90's suggesting that this pre-ringing is what created "CD strain" for many folks. I received no response nor was my letter published .... but years later when the first high-end preamp introduced the time-domain-correcting filter(s) John suddenly "got it". My crack-pot letter became the new reality.
The pre-ringing does not exist in nature. The sensitivity of our hearing in sorting out "non-natural" sounds in context has been known for years, and this has made me wonder for thirty-five years why "objectivists" and "scientists' were so fervent in denying the claims of analog folk that analog sounded better. I remember sending John Atkinson a letter back in the '90's suggesting that this pre-ringing is what created "CD strain" for many folks. I received no response nor was my letter published .... but years later when the first high-end preamp introduced the time-domain-correcting filter(s) John suddenly "got it". My crack-pot letter became the new reality.