Ключевые слова: 3d, advertising, alert, announce, announcement, attention, audio, background, broadcast, broadcasting, bullhorn, business, cartoon, communicate, communication, concept, design, element, equipment, horn, icon, illustration, isolated, loud, loudspeaker, marketing, media, megaphone, message, minimal, news, noise, object, promotion, public, realistic, render, scream, shout, sign, sound, speak, speaker, speech, symbol, voice, volume, warning, white,