Mon Dec 3 17:33:12 CET 2007

triangular window

however.. it is probably possible to use triangle windows and
'recompose' things later, since a triangle window is self-similar!

given a number of sample points, from this construct 2 numbers: one
weighted with ramp up, one with ramp down. these can be easily
combined, so one could shift the center of the window and recompute