Sound master noise attenuator.
D004781:Environmental Exposure; D006317:Hearing Loss, Noise-Induced / Q000517:prevention & control*; D006801:Humans; D009622:Noise; D009784:Occupational Diseases / Q000517:prevention & control; D009787:Occupational Medicine; D011482:Protective Devices; D012828:Silicones
D012828:Silicones