Ключевые слова: advertisement, announce, announcement, attention, audio, background, broadcast, bullhorn, business, call, caution, communicate, communication, concept, design, element, emergency, equipment, graphic, hand, hold, icon, illustration, info, information, isolated, job, leader, loud, loudspeaker, man, marketing, media, megaphone, message, microphone, news, person, promotion, public, shout, sign, sound, speaker, speech, symbol, urgent, vacancy, voice,