Ключевые слова: acoustic, alarm, background, bedtime, beige, booming, calm, care, clocks, color, comfort, composition, ear, earplugs, ears, equipment, flat, foam, health, hear, hearing, inserting, irritating, lay, listen, loud, night, noise, object, pink, plugging, plugs, problem, protection, protective, quiet, reduce, relax, rest, safe, safety, silence, sleep, sound, stoppers, tool, toothbrushes, top, turquoise, view,