Digital Signal Processing Reference
In-Depth Information
Original signal
2
1
0
−1
−2
10
20
30
40
50
60
70
80
90
100
Approximation at octave 3, undone
1.5
1
0.5
0
−0.5
10
20
30
40
50
60
70
80
90
100
Figure 10.2: Results of \DWT undo" for a 1D signal: original and approximation.
