涓�銆?/p>
鍗曢」閫夋嫨棰?/p>
(10
灏忛锛屾瘡灏忛
2
鍒嗭紝鍏?/p>
20
鍒?/p>
)
鍦ㄦ瘡灏忛鍒楀嚭鐨勪笁涓�夐」涓彧鏈変竴涓�夐」
鏄鍚堥鐩姹傜殑锛岃灏嗘纭�夐」鍓嶇殑瀛楁瘝濉湪棰樺悗鐨勬嫭鍙峰唴銆?/p>
1.
涓嬮潰璇存硶涓纭殑鏄?/p>
銆?/p>
A.
杩炵画闈炲懆鏈熶俊鍙风殑棰戣氨涓哄懆鏈熻繛缁嚱鏁?/p>
B.
杩炵画鍛ㄦ湡淇″彿鐨勯璋变负鍛ㄦ湡杩炵画鍑芥暟
C.
绂绘暎闈炲懆鏈熶俊鍙风殑棰戣氨涓哄懆鏈熻繛缁嚱鏁?/p>
D.
绂绘暎鍛ㄦ湡淇″彿鐨勯璋变负鍛ㄦ湡杩炵画鍑芥暟
2.
瑕佸鐞嗕竴涓繛缁椂闂翠俊鍙凤紝瀵瑰叾杩涜閲囨牱鐨勯鐜囦负
3kHz
锛岃涓嶅け鐪熺殑鎭㈠璇ヨ繛缁俊
鍙凤紝鍒欒杩炵画淇″彿鐨勬渶楂橀鐜囧彲鑳芥槸涓?/p>
銆?/p>
A
锛?/p>
6kHz
B
锛?/p>
1
锛?/p>
5kHz
C
锛?/p>
3kHz
D
锛?/p>
2kHz
3.
宸茬煡鏌愬簭鍒?/p>
Z
鍙樻崲鐨勬敹鏁涘煙涓?/p>
5>|z|>3
锛屽垯璇ュ簭鍒椾负
銆?/p>
A.
鏈夐檺闀垮簭鍒?/p>
B.
鍙宠竟搴忓垪
C.
宸﹁竟搴忓垪
D.
鍙岃竟搴忓垪
4.
涓嬪垪瀵圭鏁ｅ倕閲屽彾鍙樻崲锛?/p>
DFT
锛夌殑鎬ц川璁鸿堪涓敊璇殑鏄?/p>
銆?/p>
A.DFT
鏄竴绉嶇嚎鎬у彉鎹?/p>
B. DFT
鍙互鐪嬩綔鏄簭鍒?/p>
z
鍙樻崲鍦ㄥ崟浣嶅渾涓婄殑鎶芥牱
C. DFT
鍏锋湁闅愬惈鍛ㄦ湡鎬?/p>
D.
鍒╃敤
DFT
鍙互瀵硅繛缁俊鍙烽璋辫繘琛岀簿纭垎鏋?/p>
5.
涓嬪垪鍏充簬鍥犳灉绋冲畾绯荤粺璇存硶閿欒鐨勬槸
銆?/p>
A
锛庢瀬鐐瑰彲浠ュ湪鍗曚綅鍦嗗
B
锛庣郴缁熷嚱鏁扮殑
z
鍙樻崲鏀舵暃鍖洪棿鍖呮嫭鍗曚綅鍦?/p>
C
锛庡洜鏋滅ǔ瀹氱郴缁熺殑鍗曚綅鎶芥牱鍝嶅簲涓哄洜鏋滃簭鍒?/p>
D
锛庣郴缁熷嚱鏁扮殑
z
鍙樻崲鏀舵暃鍖洪棿鍖呮嫭
z
=鈭?/p>
6.
璁剧郴缁熺殑鍗曚綅鎶芥牱鍝嶅簲涓?/p>
h(n)
锛屽垯绯荤粺鍥犳灉鐨勫厖瑕佹潯浠朵负
銆?/p>
A
锛庡綋
n>0
鏃讹紝
h(n)=0 B
锛庡綋
n>0
鏃讹紝
h(n)鈮?
C
锛庡綋
n<0
鏃讹紝
h(n)=0 D
锛庡綋
n<0
鏃讹紝
h(n)鈮?/p>
0
7.
瑕佷粠鎶芥牱淇″彿涓嶅け鐪熸仮澶嶅師杩炵画淇″彿锛屽簲婊¤冻涓嬪垪鏉′欢鐨勫摢鍑犳潯
?
绛?/p>
銆?/p>
(I)
鍘熶俊鍙蜂负甯﹂檺
II)
鎶芥牱棰戠巼澶т簬涓ゅ�嶄俊鍙疯氨鐨勬渶楂橀鐜?/p>
(III)
鎶芥牱淇″彿閫氳繃鐞嗘兂浣庨�氭护娉㈠櫒
A.I
銆?/p>
II B.II
銆?/p>
III
C.I
銆?/p>
III D.I
銆?/p>
II
銆?/p>
III
8.
鍦ㄧ獥鍑芥暟璁捐娉?/p>
,
褰撻�夋嫨鐭╁舰绐楁椂
,
鏈�澶х浉瀵硅偐宄板�间负
8.95%
锛?/p>
N
澧炲姞鏃讹紝
2
蟺
/
N
鍑忓皬锛岃捣浼忔尟鑽″彉瀵嗭紝
鏈�澶х浉瀵硅偐宄板�煎垯鎬绘槸
8.95%
锛岃繖绉嶇幇璞＄О涓?/p>
銆?/p>
A
锛庡悏甯冩柉鏁堝簲
B
锛庢爡鏍忔晥搴?/p>
C
锛庢硠婕忔晥搴?/p>
D
锛庡濂庢柉鐗规晥搴?/p>
9.
涓嬮潰鍏充簬
IIR
婊ゆ尝鍣ㄨ璁¤娉曟纭殑鏄?/p>
銆?/p>
A
锛庡弻绾挎�у彉鎹㈡硶鐨勪紭鐐规槸鏁板瓧棰戠巼鍜屾ā鎷熼鐜囨垚绾挎�у叧绯?/p>
B
锛庡啿婵�鍝嶅簲涓嶅彉娉曟棤棰戠巼娣峰彔鐜拌薄
C
锛庡啿婵�鍝嶅簲涓嶅彉娉曚笉閫傚悎璁捐楂橀�氭护娉㈠櫒
D
锛庡弻绾挎�у彉鎹㈡硶鍙�傚悎璁捐浣庨�氥�佸甫閫氭护娉?/p>
10.
璁句袱鏈夐檺闀垮簭鍒楃殑闀垮害鍒嗗埆鏄?/p>
M
涓?/p>
N
锛?/p>
娆查�氳繃璁＄畻涓よ�呯殑鍦嗗懆鍗风Н鏉ュ緱鍒颁袱鑰呯殑
绾挎�у嵎绉紝鍒欏渾鍛ㄥ嵎绉殑鐐规暟鑷冲皯搴斿彇
銆?/p>
A.M+N
B.M+N-1
C.M+N+1
D.2(M+N)
浜屻�佸～绌洪锛堝叡
10
绌猴紝姣忛
2
鍒嗭紝鍏?/p>
20
鍒嗭級灏嗘纭殑绛旀鍐欏湪姣忓皬棰樼殑绌烘牸鍐呫�傞敊濉?
鎴栦笉濉潎鏃犲垎銆?/p>
11
銆佹暟瀛椾俊鍙锋槸鎸?/p>
鐨勪俊鍙枫�?/p>
12
銆?/p>
DFT
涓?/p>
DFS
鏈夊瘑鍒囧叧绯伙紝鍥犱负鏈夐檺闀垮簭鍒楀彲浠ョ湅鎴愬懆鏈熷簭鍒楃殑
__________
锛岃�?/p>
鍛ㄦ湡搴忓垪鍙互鐪嬫垚鏈夐檺闀垮簭鍒楃殑
_________
銆?/p>