Ключевые слова: advertisement, amplifier, announce, announcement, attention, audio, background, broadcasting, bullhorn, color, communicate, communication, copy, dark, device, equipment, female, green, hand, holding, inform, loud, loudhailer, loudspeaker, media, megaphone, message, news, noise, person, portable, proclaim, propaganda, protest, scream, shout, sound, space, speak, speaker, text, volume, white, woman,