Ключевые слова: advertisement, agitation, alert, amplifier, announcement, attention, background, call, color, communication, composition, concept, creative, decision, device, equipment, flat, idea, information, lay, loud, loudspeaker, megaphone, message, modern, news, nobody, object, opinion, paper, proclaim, promotion, propaganda, protest, purple, sound, speak, speech, strips, talk, thoughts, top, view, volume, waves,