Obraz3 (66)

FILTRY

FILTRY DOLNOPRZEPUSTOWE    FILTRY GÓRNOPRZEPUSTOWE

1 < A < 1

-1 < A < 1

PP:

A = 1-to²-—

2

-1<1-co² — <1 2 O

> w > 0

A = 1-

-1<1-

1

2u> LC

1

2oj LC

< 1

PP:

1

< U) < 00

Vlc

^Wg Vlć

PP:	a =	= 0, b = arccosj^l -
CD=0	—>	b=0
CO=(Bg	->	b=n
PZ:	a =	arcch(-A) = arcch

₂lc

₂lc

^j 2

2VLC

^U,B 2VLĆ

PZ:

PP:	a = 0,	b = arccos^l -
CO->00	->	b^O
ffl=C0g	-»	b=-n
a = arcch(-A) =		arcchf -1 + -—; l 2 co

1

2w LC

CO -»oo