Signals and Systems - Electrical Engineering

5.7 Convolution and Filtering 343

0

0.2

0.4

0.6

0.8

1

|H

(j ω )|

Ω

0510

Magnitude Response

0510 Ω

− 100

0

100

∠ H

(j ω)

Phase Response

− 2 0 2 − 1

−0.5

0

0.5

1

σ

jΩ

Poles/Zeros

FIGURE 5.12
Frequency response and poles/zeros location of the all-pass filter.

FIGURE 5.13
Bank-of-filter spectrum analyzer. LPF stands for
low-pass filter, andBPFicorresponds to band-pass
filters,i=1,...,N.

x(t)

Power measurement

LPF

BPF 1

BPFN

Px(0)

Px(Ω 1 )

Px(ΩN)

. . .