Ключевые слова: advertisement, advertising, alarm, alert, amplifier, announce, announcement, attention, audio, broadcast, broadcasting, business, button, communication, control, element, emergency, horn, icon, interface, internet, loud, louder, loudspeaker, marketing, megaphone, message, microphone, music, noise, notify, propaganda, radio, scream, shout, shouting, sign, sound, sound icon, speak, speaker, speaker icon, speaker sign, speech, symbol, voice, volume, volume icon, warning, web,