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单选题

DTX概念正确的是()

发布日期:2020-04-11

DTX概念正确的是()
A

DTX为不连续发射,基于语音激活技术,一般下行打开,可以有效地抵抗干扰

B

DTX为不连续发射,基于语音激活技术,一般上下行都打开,可以提高语音质量,特别是干扰大的区域

C

DTX为不连续发射,基于语音激活技术,一般下行打开,可以有效地降低整网的内部干扰

D

DTX为不连续发射,基于语音激活技术,一般不怎么打开,因为它影响网络的容量

试题解析

不连续发射

不连续发射(Discontinuous Transmission,简称:DT)是指移动台发射机在没有语音时不发送信息的特点,诸如在无通话期间。

中文名
不连续发射
简称
DT
外文名
Discontinuous Transmission
规则
在BTS接收时有不连续接收

语音

语音,即语言的物质外壳,是语言的外部形式,是最直接地记录人的思维活动的符号体系。它是人的发音器官发出的具有一定社会意义的声音。语音的物理基础主要有音高、音强、音长、音色,这也是构成语音的四要素。

中文名
语音
基本释义
说话时发出的声音
四要素
音高
外文名
Speech sound
来源
人的
传输
发音—传递—感知

激活

激活是软件厂商采用的防盗版技术,意味着软件必须激活才可以成为正式用户。如果不激活的话就不可以使用或者有功能限制、时间限制等。激活是按照一定的算法把软件随机生成的代码转化为激活码,如果正确的话就成为正式用户。

中文名
激活
意思
外文名
activation

标签: dtx 概念

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