An adjustable-width window with good dynamic range
  A new variable-width window is presented and compared with several other windows, both of variable and fixed widths. The comparison focuses on sensitivity and dynamic range. The equivalent noise bandwidth or ENBW (or rather, its reciprocal) is used as a proxy for the first; maximum sidelobe level and high-frequency roll-off in the Fourier transform, for the second. The new window can access any value of ENBW by appropriate choice of the width parameter. At any given value of ENBW below about 3, a setting can be found at which the sidelobes of the window are lower than those of any other in the moderate frequency regime below about 100 cycles. 
I M Stewart
cs.NA