Digital Signal Processing Reference
In-Depth Information
2
1
1
0
0.5
-1
-2
0
0
20
40
60
0
2000
4000
6000
8000
Time index n
Frequency (Hz)
2
1
0.8
1
0.6
0
0.4
-1
0.2
-2
0
0
20
40
60
0
2000
4000
6000
8000
Time index n
Frequency (Hz)
FIGURE 4.19
Comparison of a spectrum without using a window function and a spectrum using a triangular window with
50 samples in Example 4.11.
2
1
1
0
0.5
-1
-2
0
0
50
100
0
2000
4000
6000
8000
Time index n
Frequency (Hz)
2
1
0.8
1
0.6
0
0.4
-1
0.2
-2
0
0
50
100
0
2000
4000
6000
8000
Time index n
Frequency (Hz)
FIGURE 4.20
Comparison of a spectrum without using a window function and a spectrum using a Hamming window with
100 samples in Example 4.11.
 
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