The results show that Fourier Series Smoothing method is not only an efficient method, but also is easy to estimate image quality using modulation transfer function.
试验结果表明：付立叶级数滤波法是一种行之有效的方法，并便利于用调制传递函数评价影象质量。
2
The article deals with the functions of DC AC series intelligent power inverters, software PWM technology and alternating voltage output modulation technology.
介绍了DC AC系列智能电源逆变器的功能，软件PWM技术及其交流电压输出调制技术。
3
Then with the help of the mathematical analysis of the modulation methods in the series resonance circuit and the simulation results, a suited modulation method is chosen.