This setting allows you to set a time period that your phone will mute selected sounds.

此设置允许您设置的时间段，您的手机将选定的声音静音。

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There's even a Silent Mode that lets the user mute camcorder sounds and darken the LCD for those times when unobtrusive recording is advised, such as when recording school plays or lectures.

ENGADGET: JVC's 2012 Everio 1080p camcorder lineup gains WiFi, enables geotagging and remote control via smartphone