Window function and its Fourier transform – Blackman
Produced by GNUPLOT 5.2 patchlevel 6
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0
N
amplitude
samples
Blackman window
gnuplot_plot_1a
gnuplot_plot_2a
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-40
-20
0
20
40
decibels
bins
Fourier transform
gnuplot_plot_1b
gnuplot_plot_2b
B = 1.727