介绍了一种采用动反馈式扬声器的管道有源自适应噪声控制系统，系统中动反馈扬声器既作为有源消声系统的执行元件，也作为检测控制效果的声传感器。
An active adaptive noise control system in ducts is proposed, which adopts a motional feedback loudspeaker not only as an noise controlling actuator but also as a detecting sensor.
并对含有穿孔管声学元件的消声器进行传递损失计算和消声性能分析。
Their transmission losses are calculated, and their silencing of noise properties analyzed.
在海水管道系统中，由泵、阀门、弯头等元件引起的压力脉动(即流噪声)是主要的噪声源，消声器被广泛应用于抑制流体压力脉动。
Fluid pressure pulse is one of the main noise source in water piping system, mufflers are widely used to restrain pressure pulse.
本文针对消声器声学性能的计算方法和穿孔元件的声学特性开展系统研究。
Therefore, the present thesis will investigate in detail the calculation methods of acoustic attenuation performance of silencers and the acoustic characteristics of perforated elements.
本文针对消声器声学性能的计算方法和穿孔元件的声学特性开展系统研究。
Therefore, the present thesis will investigate in detail the calculation methods of acoustic attenuation performance of silencers and the acoustic characteristics of perforated elements.
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