Finite Impulse Response Filter Design - Digital Signal Processing: Fundamentals and Applications - page 275

Table 7.15 FIR Filter Coefficients in Example 7.16
B: FIR Filter Coefficients (optimal design method)

b ¼ b ¼ 0.022715 b ¼ b ¼ 0.012753 0 25 1 24

b 2 ¼ b 23 ¼ 0.005310 b 3 ¼ b 22 ¼ 0.009627

b 4 ¼ b 21 ¼0.004246 b 5 ¼ b 20 ¼ 0.006211

b 6 ¼ b 19 ¼ 0.057515 b 7 ¼ b 18 ¼ 0.076593

b 8 ¼ b 17 ¼0.015655 b 9 ¼ b 16 ¼0.156828

b 10 ¼ b 15 ¼ 0.170369 b 11 ¼ b 14 ¼ 0.009447

b 12 ¼ b 13 ¼ 0.211453

0

-20

-40

-60

-80

0 500 1000 1500 2000 2500 3000 3500 4000

Frequency (Hertz)

400

200

0

-200

-400

-600

0 500 1000 1500 2000 2500 3000 3500 4000

Frequency (Hertz)

FIGURE 7.36

Frequency and phase responses for Example 7.16.

%
fs ¼ 8000;
f ¼ [ 0 0.15 0.25 0.4 0.5 1]; % Edge frequencies

m ¼ [ 0 0 1 1 0 0]; % Ideal magnitudes

w ¼ [ 39 10 39 ]; % Error weight factors

format long