Calculating the 'position' by using an iterative loop series of approximations is ultimately going to yield a different solution than a 'fixed' or closed mathematical equation, sorta by definition.
And granted this ∆ is going to be very small.
But then what we are hearing is the addition of these small details, these refinements to the analog signal, which is where all the really good stuff resides.
Like the moisture in the breath, or the rattle of the cymbal vs the light brush stroke, fingernails or picks on that guitar, etc…
These subtle, yet oh so intriguing details, when added to the analog signal ARE what I seek.
And performing the math while using only exact numbers (not approximations) and doing so while solving for both primary parameters (time and amount) simultaneously is a trick and a half, in and of itself, (kinda think along the lines of Heisenberg's Uncertainty principle as an example).
This trick was hinted at by Baldr when he mentioned dividing by zero.
So solving that conundrum (/0 = null) AND performing a solution using a fixed equation, yields additional resolution, and when timed properly, even more of the original signal is 'restored/recovered/recreated'.
This is a way of describing what I hear from the Jggy.
JJ