Digital Signal Processing Reference
In-Depth Information
a
+1
+1
-1
-1
U
=
0
U
=
1
b
+1
+1
-1
-1
U
=
2
U
=
3
c
+1
+1
-1
-1
U
=
4
U
=
5
d
+1
+1
Figure 12.2ae12.2d. Sample cosine
frequencies used in DCT.
-1
-1
U
=
6
U
=
7
