Ключевые слова: abstract, audience, auditorium, background, big, blur, bokeh, business, chair, colorful, commerce, conference, consumer, convention, defocused, design, empty, event, fast, focus, forum, group, hall, huge, indoor, inside, interior, large, learn, lecture, listening, luxury, many, meeting, modern, person, perspective, presentation, purchase, retail, room, row, seated, seminar, sit, speaker, store, table, training, watching,