Ключевые слова: alert, alertness, amplify, announce, announcement, attention, audio, beam, bright, broadcast, broadcasting, call to action, campaign, clarity, command, communication, concept, directional, emergency, emitting, engage, equipment, focus, influence, information, light, light background, listening, loud, marketing, megaphone, message, minimalistic, notification, persuade, persuasion, projection, public, red, signal, simple, sound, speak, speaker, speaking, urgency, voice, volume, wall, white,