filter-spline-filter technique

[Robert R. Gustavson]

Can anyone recommend a good resource for a quick explanation of
filter-spline-filter smoothing technique?
Thanks
Bob
============================================
============================================
Robert R. Gustavson
Associate Professor and Head Soccer Coach
John Brown University
Siloam Springs, Arkansas 72761
office phone: 501-524-7321
office fax: 501-524-7412