In the movie Twilight, when Edward is bringing Bella upstairs, right before he says, "I told them not to do this", look at the glass holding up the railing. It's a microphone.
What I believe they are talking about, is near the bottom, you can see the edge of the railing and then another line going in the opposite direction. What they think is a microphone, is really just another support for the railing and the glass. If you look at the picture someone posted, you can see what I mean.
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