Ключевые слова: audience, auditorium, background, blurred, business, businessman, coaching, conference, congress, convention, cooperation, corporate, discussion, education, entrepreneur, entrepreneurship, event, expert, explaining, gesturing, hall, image, information, institute, learn, lecture, lecturer, listeners, man, manager, meeting, meetings, microphone, participants, people, podium, presentation, professional, public, rostrum, screen, seminar, speaker, speech, summit, talk, training, university, unrecognizable, workshop,