Ключевые слова: abstract, assembling, audience, background, blur, blurred, blurry, boardroom, business, businessman, center, classroom, conference, convening, convention, copy, corporate, decoration, defocused, education, equipment, event, forum, function, group, hall, hotel, lecture, light, listening, meeting, multimedia, nobody, participants, people, presentation, professional, room, seminar, sit, space, speaker, speech, study, symposium, table,