Ключевые слова: abstract, activity, adult, amplification, announce, announcement, audience, auditorium, auditory, background, behavior, blur, building, business, comedy, communicate, communication, conference, corporate, crowd, defocused, education, event, explanation, group, hall, human, interpersonal, lecture, listening, meeting, meeting room, office, people, performance, person, presentation, relation, relationship, representation, room, school, seminar, speech, talk, university, vocal, white, work, worker,