Ключевые слова: assembly, audience, audio, auditorium, blur, business, centre, club, communication, computer, conference, congress, convention, culture, equipment, event, hall, laptop, lecture, media, meeting, microphone, news, nobody, orator, party, podium, presentation, professional, projector, public, publicity, reporter, room, rostrum, screen, seminar, show, sound, speak, speaker, speaking, speech, stage, table, talk, talking, visual, voice, wall,