涔犻鍏?/p>
1.
鍦ㄩ鍥?/p>
6.1
锛?/p>
a
锛?/p>
(b)
涓紝瀹炵嚎鍒嗗埆涓轰袱涓渶灏忕浉浣嶇郴缁熺殑寮�鐜鏁板箙棰戠壒鎬ф洸绾匡紝鍥句腑铏?/p>
绾块儴鍒嗚〃绀洪噰鐢ㄤ覆鑱旀牎姝ｅ悗绯荤粺鐨勫紑鐜鏁板箙棰戠壒鎬ф洸绾挎敼鍙樺悗鐨勯儴鍒嗭紝璇曢棶锛?/p>
1
锛変覆鑱旀牎姝ｆ湁鍝嚑绉嶅舰寮忥細
2
锛夎瘯鎸囧嚭鍥撅紙
a
锛?/p>
銆?/p>
(b)
鍒嗗埆閲囧彇浜嗕粈涔堜覆鑱旀牎姝ｆ柟娉曪紵
3
锛夊浘锛?/p>
a
锛?/p>
銆?/p>
(b)
鎵�閲囧彇鐨勬牎姝ｆ柟娉曞垎鍒敼鍠勪簡绯荤粺鐨勪粈涔堟�ц兘锛?/p>
-20dB/dec
-40dB/dec
0dB
L
(
蠅
)
-20dB/dec
-40dB/dec
-20dB/dec
-40dB/dec
-40dB/dec
-20dB/dec
L
(
蠅
)
0dB
(a)
(b)
棰樺浘
6.1
涔犻
1
鍥?/p>
绛旀锛?/p>
1)
銆佺浉浣嶈秴鍓嶆牎姝ｃ�佺浉浣嶆粸鍚庢牎姝ｃ�佺浉浣?/p>
-
瓒呭墠鏍℃
2)
銆佸浘
(a)
涓茶仈鐩镐綅婊炲悗鏍℃锛屽浘
(b)
涓茶仈鐩镐綅瓒呭墠鏍℃銆?/p>
3)
銆佺浉浣嶆粸鍚庢牎姝ｆ彁楂樹簡浣庨娈电殑澧炵泭锛屽彲鍑忓皯绯荤粺鐨勮宸�傜浉浣嶈秴鍓嶆牎姝ｆ敼鍠勪簡绯?/p>
缁熺殑绋冲畾鎬э紝浣垮壀鍒囬鐜囧彉澶э紝鎻愰珮绯荤粺鐨勫揩閫熸�с�?/p>
2.
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)
(
0
飦?/p>
L
濡傞鍥?/p>
6.2
鎵�绀猴紝
閲囩敤涓茶仈鏍℃锛?/p>
鏍℃瑁呯疆
鐨勪紶閫掑嚱鏁?/p>
)
1
100
)(
1
3
.
0
(
)
1
10
)(
1
3
(
)
(
飥?/p>
飥?/p>
飥?/p>
飥?/p>
飥?/p>
s
s
s
s
s
G
c
60
40
20
0
-20
0.3
1
3
10
30
100
300
0.1
-40
-60
-40
-60
-20dB/dec
dB
L
/
)
(
飦?/p>
1
/
飥?/p>
s
飦?/p>
棰樺浘
6.2
涔犻
2
鍥?/p>
锛?/p>
1
锛夊啓鍑烘牎姝ｅ墠绯荤粺鐨勪紶閫掑嚱鏁?/p>
)
(
0
s
G
锛?/p>
锛?/p>
2
锛夊湪鍥句腑缁樺埗鏍℃鍚庣郴缁熺殑瀵规暟骞呴鐗规�ф洸绾?/p>
)
(
飦?/p>
L
锛?/p>
锛?/p>
3
锛夋眰鏍℃鍚庣郴缁熺殑鎴棰戠巼
c
飦?/p>
鍜?/p>
飦?/p>
銆?/p>
瑙ｏ細
锛?/p>
1
锛?/p>
)
1
100
)(
1
10
(
100
)
0
飥?/p>
飥?/p>
飥?/p>
s
s
s
s
G
锛?/p>
2
锛?/p>
2
0
)
1
100
)(
1
3
.
0
(
)
1
3
(
100
)
)
(
)
(
飥?/p>
飥?/p>
飥?/p>
飥?/p>
飥?/p>
s
s
s
s
s
G
s
G
s
G
c
锛?/p>
)
(
飦?/p>
L
鏇茬嚎瑙?/p>
绛旀鍥?/p>
銆?/p>