.
.
鍗曢」閫夋嫨
1
銆佸凡鐭ヤ竴涓?/p>
8
杩涘埗淇″彿鐨勭爜鍏冮�熺巼涓?/p>
4800
娉㈢壒锛屽垯鍏跺搴旂殑淇℃伅閫熺巼鏄?/p>
( )
A.4800bit/s B.2400bit/s C.9600bit/s D.14400bit/s
2
銆佹弧瓒虫娊鏍峰畾鐞嗘椂浣庨�氬瀷淇″彿鐨勬娊鏍烽鐜囧簲閫変负锛?/p>
锛?/p>
A.f
s
鈮?/p>
f
m
B.f
s
=2f
m
C.f
s
<2f
m
D.f
s
鈮?/p>
2f
m
3
銆佺洰鍓嶅ぇ澶氭暟
PDH
閮介噰鐢ㄥ紓姝ュ鎺ワ紝杩欑澶嶆帴鏂规硶鍦ㄥ鎺ュ墠棣栧厛瑕佸仛鐨勫伐浣滄槸
( )
A.
瑕佽皟鍑嗕綆娆＄兢鐨勬爣绉版暟鐮佺巼
B.
鍏堝皢鐮佸厓鍙樻垚褰掗浂鐮?/p>
C.
杩涜鐮侀�熷彉鎹?/p>
D.
杩涜鐮侀�熻皟鏁?/p>
4
銆佹牱鍊间负
301
鈻筹紝瀹冨睘浜?/p>
A
寰?/p>
13
鎶樼嚎鐨勶紙
锛?/p>
A.
绗?/p>
5
閲忓寲娈?/p>
B.
绗?/p>
6
閲忓寲娈?/p>
C.
绗?/p>
7
閲忓寲娈?/p>
D.
绗?/p>
8
閲忓寲娈?/p>
5
銆?/p>
PCM30/32
鐨勫熀缇ら�熺巼涓猴紙
锛?/p>
A.64 kb/s B.384kb/s
C.2.048Mb/s D.8.448Mb/s
6
銆佽 閲忔暟瀛楅�氫俊绯荤粺鍙潬鎬х殑涓昏鎸囨爣鏄紙
锛?/p>
A.
淇℃伅浼犺緭閫熺巼
B.
绗﹀彿浼犺緭閫熺巼
C.
棰戝甫鍒╃敤鐜?/p>
D.
宸敊鐜?/p>
7
銆佹煇鏁板瓧閫氫俊绯荤粺
1
绉掍紶杈?/p>
10000
涓爜鍏冿紝鍏朵腑閿欒
1
浣嶇爜鍏冿紝鍒?/p>
e
P
涓猴紙
锛?/p>
A.10
-3
B.10
-4
C.10
-5
D.10
-6
8
銆佺敤
8kHz
閫熺巼瀵归璋遍檺浜庝笅鍒楄寖鍥寸殑妯℃嫙淇″彿鎶芥牱锛屽摢涓笉浼氬嚭鐜伴璋辨贩鍙犳晥
搴?/p>
?( )
A.300Hz
锝?/p>
3.4kHz B.300Hz
锝?/p>
5kHz
C.2kHz
锝?/p>
6kHz D.4kHz
锝?/p>
8kHz
9
銆?/p>
A
寰?/p>
13
鎶樼嚎缂栫爜鍣ㄧ紪鍑虹殑鐮佸瓧鏄紙
锛?/p>
A.
绾挎�х爜
B.
闈炵嚎鎬х爜
C.
绾挎�х爜鎴栭潪绾挎�х爜
D.
浠ヤ笂閮戒笉鏄?/p>
10
銆?/p>
PDH
閲囩敤鐨勬暟瀛楀鎺ユ柟娉曚竴鑸负锛?/p>
锛?/p>
A.
寮傛澶嶆帴
B.
鍚屾澶嶆帴
C.
寮傛澶嶆帴鎴栧悓姝ュ鎺?/p>
D.
浠ヤ笂閮戒笉鏄?/p>
11
銆佸凡鐭ヤ竴涓?/p>
8
杩涘埗淇″彿鐨勭爜鍏冮�熺巼涓?/p>
2400
娉㈢壒锛屽垯鍏跺搴旂殑淇℃伅閫熺巼鏄?/p>
( )
A.4800bit/s B.2400bit/s C.3600bit/s D.7200bit/s
12
銆佹煇鏁板瓧閫氫俊绯荤粺
1
绉掍紶杈?/p>
1000
涓爜鍏冿紝鍏朵腑閿欒
1
浣嶇爜鍏冿紝鍒?/p>
e
P
涓猴紙
锛?/p>
A.10
-2
B.10
-3
C.10
-4
D.10
-5
13
銆佸垎缁勭爜锛?/p>
n,k
锛夌殑缂栫爜鏁堢巼涓?/p>
( )
A.k/n B.(n-k)/n
C.n/k D.n/(n-k)