close microphone wireless black stand conference seminar meeting room class |
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| navigate by keyword : audio auditorium background black blank blue blur broadcast business chair class close college communication concept concert conference congress education electronic empty entertainment event hall indoor interior internal karaoke learning lecture light media meeting mic microphone music new object podium presentation public room school seminar set sit sound stand theater university wireless |
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| Close up microphone wireless black on stand in conference seminar meeting room in class meeting room. |
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