Digital Signal Processing Reference
In-Depth Information
vectors are needed to reconstruct the signal. Clearly, themagnitude is larger
for frequencies closer to hot of the original signal's (6
π/
64 and 7
π/
64 in this
case); yet, to reconstruct
x
[
n
]
exactly
, we need the contribution of the entire
l
g
r
,
y
i
d
.
,
©
,
L
s
1
0
10
20
30
40
50
60
−
1
cos
8
n
,
+
3
x
[
n
]=
n
=
0,1,2,...63
32
0
10
20
30
40
50
60
3.14
0
10
20
30
40
50
60
−
3.14
Figure 4.7
Signal and DFT (example cont.d).
