An introduction to noise and its problems.
D000162:Acoustics; D001299:Audiometry; D003638:Deafness / Q000145:classification* / Q000209:etiology / Q000517:prevention & control; D006309:Hearing; D006801:Humans; D009622:Noise / Q000009:adverse effects; D055585:Physical Phenomena; D010825:Physics; D013016:Sound; D013060:Speech