21Overlapping

21Overlapping - MAE 591 RANDOM DATA Overlapping of Hanning...

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MAE 591 RANDOM DATA Overlapping of Hanning window: Effective power weighting 1 = = 1 0 2 2 ; ) ( n k n eff n kT t w t w where wt t T 2 2 1 4 1 2 () cos =− π = = + = ,.... 5 , 4 , 3 2 8 3 4 cos 4 1 4 3 ) ( 2 ; n for n for n T t t w n eff π percentage overlap advantage disadvantage eff r e T B ) ( 50 ( n =2) simple ripple in the effective weighting d n 66.7 ( n =3) uniform weighting not practical - 75 ( n =4) uniform weighting
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