Ключевые слова: audience, audio, auditorium, background, blur, broadcast, business, center, communication, concert, conference, congress, convention, display, education, electronic, event, hall, indoor, inside, interior, internal, karaoke, learning, lecture, light, listen, media, meeting, metal, mic, microphone, modern, music, object, old, people, podium, presentation, public, room, screen, seminar, sit, sound, speech, table, university, white, wireless,