Sound preconditioning(87 dB SPL white noise 5 h/d for 10 d) brings no harm to the hearing of guinea-pigs and can protect the hearing damage caused by intense noise that followed(110 dB white noise 5 h).

• 结论:声预处理(87 db白噪声10 d,每天5 h)不会造成豚鼠听力损失,并可以减轻随后强噪声(110 db白噪声5 h)引起的听力损失;