Ключевые слова: alert, amplification, amplifier, announce, announcement, attention, audio, broadcast, city, cloud, communication, concept, electric, electricity, energy, equipment, global, ideas, information, israel, loud, loud speaker, megaphone, message, metal, opportunity, outdoor, part of, power, public, shout, shouting, sky, sound, speak, speaker, street, system, technology, tel aviv, vintage, voice, volume, warning,