飞行员有源降噪耳罩低频隔声量试验研究

Experimental Research on Pilot Active Noise Reduction Earmuffs Low-frequency Sound Insulation Quantity

依托低频隔声量的测试原理,提出了客观法测量飞行员有源降噪耳罩低频隔声量具体试验方案,对几种飞行员有源降噪耳罩进行了测试,得出了有源降噪耳罩低频隔声量的数据,提出了影响有源降噪耳罩低频隔声量的关键因素,为设计改进提供了依据和有力的数据支持。

Depending on the amount of low frequency noise testing principle, the objective method of measuring the pilot active eamluffs low-frequency noise reduction of concrete test plan was put forward. The several kinds of active noise control earmuffs were tested. The active noise reduction earmuffs low-frequency sound insulation quantity data was obtained. The influence of active noise reduction eamuffs was proposed. The key factors of low-frequency noise was presented. The design improvement basis and data support were provided.