Hi,
On Mon, Apr 26, 2010 at 10:46:23AM +0200, Matteo Sisti Sette wrote:
I guess it is related to the 4-point interpolation, because in order to
compute the first point you need one extra point that is not available
at delay 0. However, I don't see how that completely explains a
one-sample delay: this only affects the very first sample of the delayed
signal, there's no reason to have the whole signal delayed one sample.
Except the problem of time machines: When interpolating around a non-delayed signal, you are interpolating around the time "now" and so you would need at least one sample from the future, whhich hasn't happened yet.
This is not only valid for the "first" sample, as in a constantly updating delay line there is no "first sample".
Ciao
Frank Barknecht Do You RjDj.me? _ ______footils.org__