Ключевые слова: amplifier, announce, announcement, audio, background, blue, broadcast, clouds, communication, concept, copyspace, electric, energy, information, isolated, loud, megaphone, message, metal, music, nobody, object, old, outdoor, power, public, retro, shout, sky, sound, space, speak, speaker, speakers, sport, station, system, systems, technology, text, two, vintage, voice, white, wire,