摘要
匀速工况车内噪声客观评价是对车辆行驶时车内噪声状况的综合评价,也是最成熟、最贴近实际的试验评价工况。评价匀速车内噪声最常用的方法是在车内布置麦克风测量各个车速下的A计权声压级;随着测试设备的不断发展,近几年在噪声测量上有了更先进完善的测试设备——数字人工头,不但可以测量A计权声压级,同时还引入了响度、语音清晰度等心理声学参数。本文通过对比分析4种不同的试验方案得到的试验结果,揭示了数字式人工头和普通传4声器两种试验设备在车内噪声测量试验中的差异。
Constant speed driving is an effective and closer-to-actual way to evaluate interior noise of passenger cars. Digital artificial heads are more advanced device compared with traditional microphones. Psychoacoustic parameters such as loudness & articulation index can give a fully objective evaluation of interior noise while combined with A weighting SPL. Differences of above parameters are concluded by comparing four different test plans.
出处
《汽车科技》
2013年第5期25-28,共4页
Auto Sci-Tech
关键词
匀速车内噪声
普通麦克风
数字人工头
A计权声压级
频谱
interior noise at constant speed
microphone: digital artificial head: A Weighting SPL.Noise: spectrum