Study of the feasibility of using perforated and split ear protectors in aircraft during flight.
D000337:Aerospace Medicine; D001274:Atmospheric Pressure; D004423:Ear; D006317:Hearing Loss, Noise-Induced / Q000517:prevention & control*; D006801:Humans; D011095:Polyethylenes; D011482:Protective Devices
D011095:Polyethylenes