Ключевые слова: audience, background, black, blur, board, business, chair, closeup, communication, computer, concept, conference, congress, convention, debate, education, empty, entertainment, equipment, event, forum, hall, hotel, indoors, interior, isolated, lecture, media, meeting, microphone, microphones, mixer, modern, office, performance, presentation, press, professional, public, room, seminar, sound, speaker, speaking, speech, stage, table, talk, technology, white,