┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
切比雪夫2型滤波器：
NW
cheb2ord03017150
N6
W
01700
┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄
椭圆滤波器：
NW
ellipord03017150
N5
W
03000
Q75通过运行程序P71来设计巴特沃兹带阻滤波器。写出所产生的传输函数的准确
表达式。滤波器的指标是什么？你的设计符合指标吗？使用MATLAB，计算并绘制
滤波器的未畸变的相位响应及群延迟响应。
Ws0406Wp0208Rp04Rs50
N1W
1buttordWpWsRpRs

umde
butterN1W
1stop
dispNumeratorCoefficie
tsaredisp
um
可编辑
f精品
dispDe
omi
atorCoefficie
tsaredispde
gwgai
umde
hfreqz
umde
wgdw1grpdelay
umde
plotwpiggridaxis01605xlabelomegapiylabelGai
i
dBtitleGai
Respo
seofaButterworthBa
dstopFilterpauseplotwpiu
wrapa
glehgridtitlePhaseSpectrumargHejomegaxlabelomegapiylabelPhasei
radia
spauseplotw1piu
wrapgdgridtitleDelayCharacteristicxlabelomegapiylabelGroupDelay
NumeratorCoefficie
tsareColum
s1through100049300000024650000004930000000493000000
0246500000Colum
1100493De
omi
atorCoefficie
tsare
可编辑
f精品
Colum
s1through10
1000000000008500000006360000000028800000
0056100000Colum
1100008
Gai
i
dB
Gai
Respo
seofaButterworthBa
dstopFilter0
10
X0302Y1573
X0702Y1464
20
30
40
X04Y5050
X06Y50
6000102030405060708091
Phasei
radia
s
PhaseSpectrumargHej0246810121400102030405060708091

GroupDelay
DelayCharacteristic10
987654321
00102030405060708091
Q76修改程序P71来设计符合习题Q71所给指标的切比雪夫1型低通滤波器。写
出所产生的传输函数的准确表达式。你的设计符合指标吗？使用MATLAB，计算并
绘制滤波器的未畸变的相位响应及群延迟响应。
Desig
ofaButterworthBa
dstopDigitalFilter
Ws0406Wp0208Rp04Rs50
EstimatetheFilterOrder
N1W
1cheb1ordWpWsRpRs
Desig
theFilter

umde
cheby1N1RpW
1stop
Displaythetra
sferfu
ctio

可编辑
f精品
dispNumeratorCoefficie
tsaredisp
um
dispDe
omi
atorCoefficie
tsaredispde

gwgai
umde

hfreqz
umde
w
gdw1grpdelay
umde

plotwpiggrid
axis01605
xlabelomegapiylabelGai
i
dB
titleGai
Respo
seofaButterworthBa
dstopFilter
pause
plotwpiu
wrapa
glehgrid
titlePhaseSpectrumargHejomega
xlabelomegapi
ylabelPhasei
radia
s
pause
plotw1piu
wrapgdr