Ключевые слова: acoustic, block, construction, contour, ear, earmuffs, earplugs, ears, emerging, environmental, fluo, head, headphones, hearing, high visibility, industrial, industry, isolation, jacket, loud, man, muff, muffle, muffs, noise, noisy, phone, phones, plastic, protect, protection, quiet, reduction, safety, shock, shop, silent, sonic, sound, surprise,