I haven't heard DSD or DXD and so remain skeptical in the true sense of the term and have found the earlier cited articles informing and persuasive.
My question: what about pulse response?
In an article on the benefits of DXD, M. Vest claims DSD provides "perfect pulse transparency," stating further that, "[t]wo factors define the pulse response — the roll-off frequency of the sampling filter (anti-alias filter) and the slope of the filter roll-off. A high roll-off frequency gives a high amplitude pulse because of more high frequency content being present. A slow roll-off slope will produce less pre and post ringing of the pulse and thus a more precise time point for the pulse."
(This article may found here:
http://www.lindberg.no/english/collection/004.pdf)
Any thoughts on this claim? I'd also like to know more about pulse response and, if possible, hear it. I guess (read: I have no idea!) this would mean running a PCM/DSD test on various sound sources with different attack transients and comparing how they each render.
Any sources where I might read up on this? Might this be the last holdout position for a possible advantage to DSD or DXD over PCM? (I know DXD is PCM, but apparently it has advantages here).