Ключевые слова: announce, audience, audio, auditorium, black, blur, business, ceremony, communication, concert, conference, confident, consultation, convention, dynamic, education, entertainment, equipment, event, hall, indoors, interview, lecture, live, meeting, metal, mic, microphone, music, object, performance, podium, presentation, professional, record, room, seminar, show, singing, sound, speak, speech, stage, stand, studio, talking, technology, vocal, voice, vote,