Dictionary:Window carpentry

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Abrupt discontinuities, such as at the edges of a boxcar window, produce undesirable ringing and overshoot effects. Window carpentry concerns designing the boundaries of windows to minimize undesirable effects by weighting the values within a window according to some scheme. Window weightings in common use are shown in Figure W-12. Note the tradeoff between narrowness of the major lobe and low sidelobe energy.