Digital Signal Processing Reference
In-Depth Information
1
2
x
(
t
)
y
3
(
t
)
y
(
t
)
3
4
y
5
(
t
)
5
(a)
y
3
(
t
)
2
3
x
(
t
)
y
4
(
t
)
y
(
t
)
1
4
y
5
(
t
)
5
Figure P2.23
(b)
(c)
Repeat Part (a) for the case that the summing junction with inputs and is
replaced with a multiplication junction, such that its output is the product of these
two signals.
(d)
Repeat Part (b) for the case that the summing junction with inputs and
is replaced with a multiplication junction, such that its output is the product of
these three signals.
y
3
(t)
y
5
(t)
y
3
(t), y
4
(t),
y
5
(t)
2.24.
Consider the feedback system of Figure P2.24. Express the output signal as a function
of the transformation of the input signal, in the form of (2.58).
2.25.
Consider the feedback system of Figure P2.25. Express the output signal as a function
of the transformation of the input signal, in the form of (2.58). The minus sign at the
summing junction indicates that the signal is subtracted.
2.26.
(a)
Determine whether the system described by
t + 1
y(t) =
L
x(t-a)dt
t
1
x
(
t
)
m
(
t
)
y
(
t
)
2
3
4
Figure P2.24
