並列摘要
Disco-induced sensorineural hearing loss is a man-made situations of fairly recent orihin, which occurs after a rather long period of exposure in a disco ball room under consciousness. Comparing to the conventional acoustic trauma caused by explosion, the latter occurs within a brief period, incidentally. This paoer presents two cases of acoustic trauma resulting from recreation exposure to loud sounf. One being to disco music and the other to Karaoke.