Wiley signals and systems e book TLFe BO 514

499

Appendix A. Solut,ions to the Kxerrises
I____

dB
dB
a) -20 b) 20 dec
S o l ~ t 10.12
~o~

P)

40

dB
dec*

~

dB
t l ) n . 20 der

The amplification inrreases exporieritially at 40%, w h m ii: << 100. Dorrbli~rgthc
frequency qriath iiplcs tbc\ amplificatioii, increasing it by 20 log 4 = 12 dB.