Ключевые слова: advertisement, alert, amplifier, announce, announcement, appeal, attention, attracting attention, background, broadcasting, bullhorn, bullhorn megaphone, bullhorn speaker, cloud, communication, concept, copy space, device, electronic, emergency, equipment, female, horn, information, isolated, loud, louder, loudhailer, loudspeaker, media, megaphone, message, mouthpiece, old, opinion, person, proclaim, protest, public, shout, shouting, speak, speaker, speaking trumpet, speech, trumpet, voice, volume, white, woman hand holding,