Ключевые слова: audience, audio, auditorium, blur, broadcast, business, chair, closeup, communication, concert, conference, congress, electronic, entertainment, equipment, hall, karaoke, lecture, light, live, media, meeting, metal, metallic, mic, microphone, modern, music, object, presentation, professional, room, seminar, sound, space, speaker, speech, stage, studio, table, technology, voice,