MIK 200 Anvendt signalbehandling, 2012. Lab. 8, Notch-filter.
MIK 200 Anvendt signalbehandling, 2012. Lab. 8, Notch-filter.
MIK 200 Anvendt signalbehandling, 2012. Lab. 8, Notch-filter.
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SSP = 1/2<br />
<strong>MIK</strong><strong>200</strong> lab8 (lab08a)<br />
System<br />
Generator<br />
Out1<br />
PUSH1_SW<br />
Bool<br />
sel<br />
d0<br />
Fix_12_12<br />
In1<br />
Digital<br />
Fix_12_12<br />
inn<br />
ut<br />
Fix_12_12<br />
inn<br />
ut<br />
Fix_12_12<br />
d1<br />
DAC1 LC<br />
ADC1 LC1<br />
Ned1000<br />
Opp1000<br />
Mux<br />
Figur 1: Systemet lab08a i spørsmål 5.<br />
<strong>MIK</strong><strong>200</strong>, subsystemet Ned1000<br />
Systemet nedsampler et innsignal, antatt format Fix_12_12 og 50 MHz,<br />
til et utsignal med format Fix_12_12 og 50 kHz<br />
1<br />
inn<br />
3−Stage<br />
Fix_12_12<br />
Fix_39_12<br />
2 −27 Fix_39_39<br />
Fix_12_12<br />
Fix_27_13 ↓2 Fix_27_13<br />
2 −11 Fix_27_24<br />
Fix_12_12<br />
In1 CIC Out1<br />
cast<br />
50 tap<br />
z −1<br />
cast<br />
500:1 Decimator<br />
MAC FIR<br />
Convert2<br />
Convert3<br />
Scale2<br />
Down Sample<br />
CIC Filter<br />
2n−tap Linear Phase<br />
Scale3<br />
MAC FIR Filter<br />
1<br />
ut<br />
Figur 2: Systemet Ned1000 som er med i alle modeller.<br />
<strong>MIK</strong><strong>200</strong>, subsystemet Opp1000<br />
Systemet oppsampler et innsignal, antatt format Fix_12_12 og 50 kHz,<br />
til et utsignal med format Fix_12_12 og 50 MHz<br />
1<br />
inn<br />
3−Stage<br />
Fix_12_12<br />
Fix_12_12 Fix_27_13<br />
↑2<br />
2 −10 Fix_27_23<br />
Fix_12_12<br />
Fix_39_12<br />
cast<br />
2 −18 Fix_39_30<br />
Fix_12_12<br />
50 tap<br />
In1 CIC Out1<br />
cast<br />
MAC FIR<br />
1:500 Interpolator<br />
Up Sample<br />
Scale4<br />
Convert4<br />
Convert1<br />
Scale1<br />
2n−tap Linear Phase<br />
CIC Filter1<br />
MAC FIR Filter1<br />
1<br />
ut<br />
Figur 3: Systemet Opp1000 som er med i alle modeller.<br />
SSP = 1/2<br />
<strong>MIK</strong><strong>200</strong> lab8 (lab08b)<br />
System<br />
Generator<br />
Out1<br />
PUSH1_SW<br />
Bool<br />
↓1000<br />
z −1<br />
Down Sample2<br />
Bool<br />
Her er fs = 50 kHz<br />
<strong>Notch</strong>00<br />
sel<br />
Digital<br />
Fix_12_12<br />
inn<br />
ut<br />
Fix_12_12<br />
inn<br />
ut<br />
Fix_14_13<br />
d0<br />
Fix_14_13<br />
inn<br />
ut<br />
Fix_12_12<br />
In1<br />
ADC1 LC1<br />
Ned1000<br />
inn<br />
Fix_14_13<br />
ut<br />
d1<br />
Opp1000<br />
DAC1 LC<br />
<strong>Notch</strong>02<br />
Mux<br />
Figur 4: Systemet lab08b i spørsmål 6.<br />
1<br />
inn<br />
Fast <strong>Notch</strong>−<strong>filter</strong>, stoppvinkel: 0.0, r = 63/64<br />
Fix_12_12<br />
z −1<br />
b0 = 1<br />
Fix_12_12<br />
b1 = −1<br />
a<br />
b<br />
Fix_14_13<br />
a − b<br />
a<br />
b<br />
a + b<br />
Fix_14_13<br />
1<br />
ut<br />
Fix_14_7<br />
a<br />
b<br />
2 6 z −1<br />
Fix_21_13<br />
a − b<br />
2 −6<br />
Fix_21_19<br />
Fix_14_13<br />
Figur 5: Systemet <strong>Notch</strong>00 i lab08b, figur 4.<br />
6
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