Ключевые слова: abstract, academy, adult, appreciation, audience, auditorium, background, bangkok, blur, blurred, business, center, class, classroom, college, concept, conference, corporate, crowd, cu, day, design, education, educator, faculty, female, group, hall, high, information, international, knowledge, laptop, lecture, listening, management, meeting, national, people, person, presentation, room, software, student, thai, thailand, training, university, web, workshop,