As noise-exposure time and recover time fixed, the frequence bund of noise was resemble,temporary threhsold shift are infacted by audition, noise- level and work year mainly.

• 在噪声暴露时间及测定时间一定、噪声频谱相近的情况下，暂时性听阈位移主要受听阈、噪声强度和工龄的影响。