分别用传声器音云电位器(MIC 1VOLUME或MIC 2 VOLUME)和数字混响(DIGITAL ECHO)电位器i整f专声器音址的大小和人声混响的强弱。装入卡拉OK碟片，然后按放像键，即可进行卡拉OK的演唱了。
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digital echo sounder 数码回声测深仪 ; 数字测深仪
Digital Echo Cancellation Technology 数字回音消除技术
digital echo suppressor 数位回声抑制器
digital echo canceller 数位回声抵销器 ; 数字回声抵消器
digital echo-sounder 数字显示式回声测声仪
canceller digital echo 数位回声消除器
suppressor digital echo 数位回升抑制器
digital echo information 数字回声信息
digital echo modulation 数字回波调制
Yet I remain unconvinced of the severity of digital echo chambers.
不过，我仍然怀疑数字回音室的严重性。
IntroductionIn the communication systems, echo and noise will seriously affect speech communication quality, such as IP telephone, videophone and hand-free digital cell phone systems etc.
引言在通信系统中，例如IP电话、可视电话及免提数字蜂窝电话系统中，回声和噪声会严重影响通信质量。
The experiment indicates that it can output analog or digital radar echo data continually, and that it has PnP, good flexibility and high compatibility.
实验表明该信号源能够连续输出模拟或者数字雷达回波数据，具有即插即用、灵活性好、通用性强的优点。
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