Digital Signal Processing Reference
In-Depth Information
80
80
60
60
40
40
20
20
0
0
0
◦
60
◦
120
◦
180
◦
240
◦
300
◦
360
◦
Θ
N
0
◦
60
◦
120
◦
180
◦
240
◦
300
◦
360
◦
Θ
N
(
a
)
(
b
)
80
80
60
60
40
40
20
20
0
0
0
◦
60
◦
120
◦
180
◦
240
◦
300
◦
360
◦
Θ
N
0
◦
60
◦
120
◦
180
◦
240
◦
300
◦
360
◦
Θ
N
(
c
)
(
d
)
80
80
60
60
40
40
20
20
0
0
0
◦
60
◦
120
◦
180
◦
240
◦
300
◦
360
◦
Θ
N
0
◦
60
◦
120
◦
180
◦
240
◦
300
◦
360
◦
Θ
N
(e)
(f)
FIG. 5.13
The gain of Case 3 for a point noise source, as a function of
Θ
N
, for several
frequencies and two values of
Δ
: (a)
F
=0
.
5 kHz,
Δ
= 1 cm, (b)
F
=0
.
5 kHz,
Δ
= 2 cm,
(c)
F
= 1 kHz,
Δ
= 1 cm, (d)
F
= 1 kHz,
Δ
= 2 cm, (e)
F
= 3 kHz,
Δ
= 1 cm, and (f)
F
= 3 kHz,
Δ
= 2 cm.
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