中文摘要：

根据德国标准 DIN 45631／A1，在 Zwicker 稳态响度模型的基础上，模拟了频域和时域掩蔽效应，通过引入一个时间常量来描述响度的动态行为，设计并基于 MATLAB 实现了 Zwicker 时变响度的计算算法。选用国内某汽车持续加速时的噪声样本为算例进行计算，计算结果与 B＆ K 公司的声品质软件 Sound Quality 的计算结果具有良好的一致性，从而验证了该时变噪声响度计算方法的准确性。

英文摘要：

According to the German standard DIN 45631/A1 ,the frequency domain and temporal masking effect were simulated on the basis of the model of Zwicker steady-state loudness ,the algorithms of Zwicker time-varying loudness were designed and implemented based on MATLAB .A time constant was introduced to describe the dynamic behavior of loudness .The noise sample of a domestic car was chosen to calculate loudness during acceleration ,the calculation results were compared with the calculation ones by B＆K sound quality software .The comparison results show favorable consistency ,thus the method of calculating loudness of the time-varying noise is validated .