Research of VoIP include: voice compression, system delaying, voice activation and voice priority.
目前，网络语音通信技术的研究内容主要包括音频压缩编码技术、系统延迟问题研究、静音抑止技术、抖动补偿技术和话音优先级技术等方面。
参考来源 - 保密网络语音通信（CryVoIP）系统的设计与实现·2,447,543篇论文数据，部分数据来源于NoteExpress
Finger activation, however, is much quicker than voice activation.
然而，指尖激活要比语音激活还要快得多。
Another cool feature of this is the voice activation for hands free phones.
另外一个很酷的特色就是免提电话语音激活。
Among the other cockpit features is voice activation of certain aircraft functions.
其它的座舱特性还有对特定飞机功能的语音激活。
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