Ключевые слова: abstract, advertisement, alert, amplifier, announce, announcement, art, attention, audio, background, broadcasting, bubble, bullhorn, business, businessman, call, communicate, communication, concept, design, equipment, graphic, illustration, isolated, loud, loudspeaker, megaphone, message, music, noise, notify, object, people, person, scream, shape, shout, shouting, sign, single, sound, speaker, speech, talk, talking, voice, warning, work,