Humming and nonorganic hearing loss.
D001299:Audiometry; D001309:Auditory Threshold; D001844:Bone Conduction; D004432:Ear, Middle / Q000502:physiology; D006311:Hearing Disorders / Q000175:diagnosis*; D006801:Humans; D008887:Military Medicine; D009787:Occupational Medicine; D010470:Perceptual Masking; D013060:Speech; D013997:Time Factors