Ключевые слова: alert, announce, announcement, art, audio, background, broadcast, broadcasting, bullhorn, business, communicate, communication, concept, contour, design, equipment, horn, icon, illustration, isolated, line, linear, lineart, loud, loudspeaker, media, megaphone, message, microphone, mouthpiece, music, noise, object, outline, propaganda, public, retro, scream, shout, sign, sketch, sound, speak, speaker, speech, symbol, voice, volume, warning,