A Calculation Method of Zwicker Time-varying Loudness

China Mechanical Engineering ›› 2014, Vol. 25 ›› Issue (22): 3073-3076.

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A Calculation Method of Zwicker Time-varying Loudness

Zhou Minggang;Dong Qifei;Liu Yang;Chen Yuan

Hubei University of Technology,Wuhan,430068

Online:2014-11-25 Published:2014-11-28
Supported by:
National Natural Science Foundation of China（No. 50975081）;Hubei Provincial Natural Science Foundation of China（No. 2011CDB085）

Zwicker时变响度的一种计算方法

周明刚;董琦飞;刘阳;陈源

湖北工业大学,武汉,430068

基金资助:
国家自然科学基金资助项目（50975081）;湖北省自然科学基金资助项目（2011CDB085）

Abstract

Abstract:

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.

Key words: sound quality;loudness;masking effect;time-varying , loudness

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。

关键词: 声品质, 响度, 掩蔽效应, 时变响度

CLC Number:

O481.1
TB535

Zhou Minggang, Dong Qifei, Liu Yang, Chen Yuan . A Calculation Method of Zwicker Time-varying Loudness[J]. China Mechanical Engineering, 2014, 25(22): 3073-3076.

周明刚, 董琦飞, 刘阳, 陈源. Zwicker时变响度的一种计算方法[J]. 中国机械工程, 2014, 25(22): 3073-3076.

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A Calculation Method of Zwicker Time-varying Loudness

Zwicker时变响度的一种计算方法

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