Esp Sheet Semtest 2 Final
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Transcript of Esp Sheet Semtest 2 Final
7/21/2019 Esp Sheet Semtest 2 Final
http://slidepdf.com/reader/full/esp-sheet-semtest-2-final 1/4
Convolution
Deconvolution
FIR flter design
F s
=2(BW )
∆ f norm=f stop−f 3dB
F s
f '
Lcnorm= fc
fs −∆ f norm/2
f '
H cnorm=fc
fs +∆ f norm /2
h (n )=hd (n )w (n)
Choice o window unction
(passband ripple and stopband
attenuation)
δ
min (¿¿s ,δ p)¿
A s=−20 log ¿
A p=20log (1+δ p)
IIR Filter design:
1. ole and !ero place"ent
"ethod:
f rel, notch= 2
F s× F unwanted × π
f rel, BW = 2
F s× F BW ×π
3dB points:
f
(¿¿ rel ,BW /2)f rel ,notch± ¿
for r > 0.9 is given by: r ≈ 1 –
(BW3dB/Fs)π
H ( )= ( −e
− !"1)( −e+ !" 1)
( −r e− !"2)( −r e
+ !"2) (1!)
"1=f rel,notch
"2=f upper pass
#. $!% "ethod
#s
p=#' p
#' s ("ig# $%ss)
#s
p= #' s
#' p (&o' $%ss)
2π ×# $
2×F s#' $= tan ¿
( # $= foran% w )
(&andpass ) :#0=#centre=2π ×f center
#s
p=#&p
2 −#0
2
W #&p
(stop&and ): #s
p= W ' #&s
#0
2
−#&s
2
oles o protot&pe flter:
7/21/2019 Esp Sheet Semtest 2 Final
http://slidepdf.com/reader/full/esp-sheet-semtest-2-final 2/4
bst for s %**ording to type of
+,ter (Fig1)
&et s - (1)/(1)
bstitte v%,es %nd *#%ngefor to 1
Figure 1 - Filter conversion
$andpass and bandstopped
Wor2 ot pries for :
( # p1 %nd # p2 for b%nd b%ss %nd
( #s1 %nd #s2 )
Realisation structure
Figure 2 - Transversal
7/21/2019 Esp Sheet Semtest 2 Final
http://slidepdf.com/reader/full/esp-sheet-semtest-2-final 3/4
Figure 3 - Linear
'. I"pulse Invariant "ethod
∝=2π × f cutoff
$%rti%, fr%*tion: if >- 45 ,ong
division
6nit ip,se: "()-7()/8()
%s*%de: *%,* *oon f%*tor
ross orre,%tion: r1; s#ift ,eft -
tive -1 1