the Quadratic interpolation is acceptable, but the Windowed SinC implementation is very slow. there are some hints from Ronald H. Nicholson Jr. on how to improve this. i have not tried anything yet, the code is in the subroutine WINSINC: if you are interested in helping.
the Quadratic interpolation is acceptable, but the Windowed SinC implementation is very slow. there are some hints from Ronald H. Nicholson Jr. on how to improve this. i have not tried anything yet, the code is in the subroutine WINSINC: if you are interested in helping.