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12.5.7.2
Mode 2 (Complex FIR Filter Generating Pure Real and Pure
Imaginary Outputs Alternately), Decimation by 2
The following equations are implemented:
(
FR n
(
FI n
2 6 10 etc
MOTOROLA
N 1
–
∑
)
(
HR i ( ) DR n i –
=
, , ,
0 4 8 etc
i
=
0
N 1
–
∑
)
(
HR i ( ) DI n i –
=
, ,
,
i
=
0
DSP56305 User's Manual
⋅
(
)
)
(
HI i ( ) DI n i –
–
⋅
(
)
)
(
HI i ( ) DR n i –
⋅
+
Filter Co-Processor
Operation Modes
⋅
(
)
)
(
)
)
12-31
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