管道有源消声次源声反馈问题研究与实验分析  

A Study of the Acoustical Feedback of the Secondary Source and Experimental Analsis On Active Noise Control in Ducts

作　　者：杨国林[1] 朱海潮[1] 于华民[1] 

机构地区：[1]海军工程大学振动与噪声研究,武汉430033

出　　处：《噪声与振动控制》2004年第2期28-30,共3页Noise and Vibration Control

摘　　要：有源消声是一种有效的低频噪声控制方法。而次源声反馈问题一直是影响管道有源消声系统的关键问题之一。从传递函数的角度分析了管道有源消声的次源声反馈问题,并提出了解决上述问题的方法。通过实验验证,此方法效果良好。Active Noise control is an effective way to comtrol low frequency noise.And the acoustical feedback of the secondary source is one of the key problems that affect noise reduction in ducts.In this paper,the problem is studied and a solution is put forward from the point of view of the transference function.The solution is verified by the experiment.

关 键 词：声反馈 有源消声 管道 低频噪声控制 传递函数 声学 

分 类 号：TB535[理学—物理] O425.1[理学—声学]