Tables and Formulas - Digital Signal Processing: An Introduction with MATLAB and Applications - page 311

Stopband gain vs. norm. freq. for C−LPF ( r = 0.5 dB)

0

n = 1

−10

n = 2

−20

−30

n = 3

−40

−50

n = 4

−60

1 2 3 4 5 6 7 8 9 10

Normalized frequency, ω / ω c

Stopband gain vs. norm. freq. for C−LPF ( r = 1 dB)

0

n = 1

−10

n = 2

−20

−30

n = 3

−40

−50

n = 4

−60

1 2 3 4 5 6 7 8 9 10

Normalized frequency, ω / ω c