Digital Signal Processing Reference
In-Depth Information
10
10
0
0
10
10
20
20
30
30
40
40
50
50
60
60
0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 3 . 5 4 . 0
0
0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 3 . 5 4 . 0
0
F (kHz)
F (kHz)
( a )
( b )
10
10
0
0
10
10
20
20
30
30
40
40
50
50
60
60
0
0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 3 . 5 4 . 0
0
0 . 5 1 . 0 1 . 5 2 . 0 2 . 5 3 . 0 3 . 5 4 . 0
F (kHz)
F (kHz)
(c)
(d)
FIG. 3.16 The white noise gain of the first-order supercardioid, as a function of frequency,
for different values of Δ : (a) Δ = 1 cm, (b) Δ = 2 cm, (c) Δ = 3 cm, and (d) Δ = 5 cm.
where
2
M = max
1≤i≤2
|m ij
|
(3.47)
j=1
is the matrix norm of M . It is easy to check that
V 2
= 2
(3.48)
and
2
−1
2
V
=
1 − e ωτ 0 (1 − α 1,1 )
2
ωτ 0 (1 − α 1,1 ) .
(3.49)
Therefore,
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