Ключевые слова: alarm, alert, amp, amplifier, audio, background, beach, blue, clear, communication, community, earthquake, electric, emergency, help, high, horn, information, line, loud, loudspeaker, megaphone, news, newspaper, object, old, outdoors, people, pillars, post, power, public, security, siren, sky, sound, speak, speaker, storm, system, talk, tower, tsunami, voice, volume, warning,