As the radial vibration of stator is the origin of the acoustic noise of SRMs, model analysis of stator vibration is the effective way to the research for low acoustic noise.
由于定子的径向振动是开关磁阻电机噪声的主要根源，因此定子振动系统的模态分析是降噪研究的有效手段。
A new method of low intensity radiated noise measurement is shown using acoustic combined sensor and combined signal processing with pressure and particle velocity.
本文研究运用组合传感器和声压、振速联合信号处理技术进行低噪声通过特性的测量。
The key to reduce the internal noise level is that we should estimate the acoustic field accurately and then go on low noise optimization design to body structure during the course of designing.
降低车辆内部的噪声的关键是在设计阶段要准确预估车内声场特性进而对车身结构进行低噪声优化设计。
In this paper, the acoustic simulation was applied to improve the noise performance of gearbox cover on the motorcycle of 125-C with the low vibro-acoustic structure design.
本文应用声学仿真的方法对125-C型摩托车变速箱端盖进行结构优化设计，达到降低表面辐射噪声的目的。
High signal to noise ratios (SNR) long range microphone, similar to the FOM 1140, intended for operation at low acoustic signal levels and over long distances.
高信噪比的远程麦克风，类似于FOM 1140，用于低噪音信号水平和远距离的运用。
Current feedback is required for low speed operation and PWM is now finding favour because of acoustic noise issues.
当前的反馈必需为低速操作并且PWM现在发现厚待由于音响噪声问题。
Current feedback is required for low speed operation and PWM is now finding favour because of acoustic noise issues.
当前的反馈必需为低速操作并且PWM现在发现厚待由于音响噪声问题。
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