Ключевые слова: alert, amplification, amplifier, announce, announcement, attention, audible, audio, background, broadcast, broadcasting, bullhorn, colorful, communicate, communication, cut out, cutout, device, electric, electronic, equipment, horn, isolated, loud, loudspeaker, megaphone, message, nobody, noise, noisy, object, one, plastic, portable, public, red, screaming, shout, shouting, sound, speak, speaker, talk, talking, voice, volume, white,