voice activation造句

Single low tone initiate voice activation

Another cool feature of this is the voice activation for hands free phones.

Voice activation is perfect for placing a call; opening the flip lid on a phone is probably the most effective way of answering it (or again using voice activation for hands-free use).

In trailer mode, the system is connected to and controlled by Optimus Prime and can be instantaneously activated by the voice activation code "Powerlinx Overload".