(1) ?????A/D???????????

1
?8? ??????

• ?????
• ???????
• ???????????
• ?????????
• ????????????

2
?????
????,??????????
???????,??????????

• (1) ?????A/D???????????
• (2) ???????????
• (3) ?????

3
???????

• ?????????
• ???????

4
???????????
??????x???????????????
?x0.X1 X2 ? Xb,???????????????
5
?????????
???????????????????
?????
???
???,??????????(b1)?),?????????
6
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????
????
??b????
?b1?????????b?????
7
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????
??????????????
????????????????
??????
??????????,??????????
8
???????????

• ?????
• ????????
• ?????????

9
???????
??????A/D???b?????,?
?????
????
??A/D???????????????????,?????????
10
??ek????
1) ek???????
2) ek ????,?ek1?ek2???
3) ek?xk???
4) ek?????
???????????????
11
???????????
??????
????????SNR?
??????,SNR??6db
12
?????????

• ?????
• IIR??????
• FIR??????

13
???????
????????,??DF?????????
?????,?????ak?bk????????
1. ???????????????????
2. ????????????????????? ???,????????
14
??IIR??????
ak?????
???????
??????,??????????z1
??????IIR DF???????
15
???????????
?????????????????????????????????
?????
????
?r?????k?????????
?pr /?ak??,?ak??pr?????,?????
16
???????????
??????????,??????????
???????,??????????
???????,???????????????,???????????
17
?? FIR??????
?????????,????????,?????????
????????E(ej?),??????
???,?????????????34?
18
????????????

• IIR DF??????
• IIR DF???????????
• FIR DF????????
• ????

19
??IIR DF ??????
??????,IIR DF?????????????,????????????????
??
????????????,????????
? y-10 b3, a 1/20.100, x
k(7/8)d k 0.111d k
20
??IIR DF??
?????
??????
21
??????????
???????
??????????
?????????????????,?????????????????
22
????????
1. ???????
??
?????,????b,??????
2. ??????????????,???????,????
23
??IIR DF???????????
?????????ek??,???????
1) ???????????
2) ????????,????
3) ????????,???????????????
24
??I???????????
???????
??I????????????????
25
??I???????????
??????
??I????????????????
26
??I???????????
ek???????????
ek?????????? He(z)1/A(z)
27
??II???????????
??II????????????????
28
??II???????????
??II????????????????
eak?ebk???????????
29
IIR DF????????????
30
IIR DF????????????
31
??FIR DF????????
?????????????
32
??????
xk??????
????
???????
1. ??????
2. ?????????1?????A,?????