Learn how to adjust the sound balance between your games and voice chat on the Xbox One, which can be very useful when using the Kinect for in-game communication instead of an headset.
You can indeed configure your console to automatically reduce the volume level of game sounds or mute them when using the Kinect for in-game voice chat. The procedure is really easy and can be achieved through a couple of steps:
While you are in the Home screen of your gaming console, press the Menu button on the controller and select Settings. Go to Display & Sounds > Volume > Chat Mixer. You can choose one of the available options, namely Mute all other Sounds, Reduce the volume of other sounds by 80% or Reduce the volume of other sounds by 50%.