
Figure
16.19 Comb +0.5
filter block diagram
includes several delay
elements and an adder.
OUT
1/6 the sampling rate). If extreme values are clipped,
artifacts will result. To avoid artifacts, the signal coding
range must include suitable footroom and headroom.
For details concerning imple-
mentation structures, see the
books by Lyons and Rorabaugh
cited on page 170.
The operation of an FIR filter amounts to multiplying
a set of input samples by a set of filter coefficients
(weights), and forming the appropriate set of sums of
these products. The weighting can be implemented
using multipliers ...