1·Random pulse width modulation technique can be used to distribute voltage harmonics over a wide frequency range and to realize the reduction of acoustic noise and vibration.
随机脉宽调制技术可以使逆变器输出电压的谐波成分均匀地分布在一个较宽的频率范围内，达到抑制噪声和机械振动的目的。
2·The problems of vibration and acoustic noise limit the application of Switched Reluctance Motors.
振动和噪声问题阻碍了开关磁阻电机的推广应用。
3·Calculation of the stator modal frequencies of an electrical machine accurately is the base of reducing acoustic noise and vibration.
准确计算定子模态和固有频率是降低电机噪声和振动的基础。
4·Our design USES an adaptive digital filter with IMC arrangement to optimally cancel unwanted acoustic noise in the headset.
采用IMC控制器结构，设计自适应数字滤波器消除耳罩内的噪声。
5·The vibration and the acoustic noise of the automobile are the main factors that affect the comfort for car-driving.
发动机的振动和噪声是影响汽车行驶舒适性的主要因数。